Quarterly report pursuant to Section 13 or 15(d)

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY

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CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)
$ in Thousands
Total
Preferred Stock [Member]
Common Stock [Member]
Additional Paid-In Capital [Member]
Stock Notes Receivable From Employees [Member]
Retained Earnings [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Beginning Balance at Dec. 31, 2017 $ 314,888 $ 0 $ 4 $ 89,877 $ (4) $ 224,071 $ 940
Beginning Balance, Shares at Dec. 31, 2017   0 38,374,011        
Cumulative effect of a change in accounting principle at Dec. 31, 2017 0 $ 0 $ 0 0 0 13 (13)
Balance as adjusted at Dec. 31, 2017 314,888 $ 0 $ 4 89,877 (4) 224,084 927
Balance as adjusted, Shares at Dec. 31, 2017   0 38,374,011        
Net and comprehensive income 60,305 $ 0 $ 0 0 0 61,032 (727)
Stock-based compensation 8,919 $ 0 $ 0 8,919 0 0 0
Stock-based compensation, Shares   0 0        
Shares issued pursuant to employee stock purchase plan 356 $ 0 $ 0 356 0 0 0
Shares issued pursuant to employee stock purchase plan, Shares   0 13,028        
Issuance of common stock for vesting of restricted stock units 0 $ 0 $ 0 0 0 0 0
Issuance of common stock for vesting of restricted stock units, Shares   0 305,975        
Issuance of common stock for unvested restricted stock awards 0 $ 0 $ 0 0 0 0 0
Issuance of common stock for unvested restricted stock awards, Shares   0 12,852        
Shares withheld related to net share settlement of stock-based awards (1,777) $ 0 $ 0 (1,777) 0 0 0
Shares withheld related to net share settlement of stock-based awards, shares   0 (54,506)        
Ending Balance at Sep. 30, 2018 382,691 $ 0 $ 4 97,375 (4) 285,116 200
Ending Balance, Shares at Sep. 30, 2018   0 38,651,360        
Beginning Balance at Jun. 30, 2018 358,897 $ 0 $ 4 94,291 (4) 264,262 344
Beginning Balance, Shares at Jun. 30, 2018   0 38,621,712        
Net and comprehensive income 20,710 $ 0 $ 0 0 0 20,854 (144)
Stock-based compensation 3,147 $ 0 $ 0 3,147 0 0 0
Stock-based compensation, Shares   0 0        
Issuance of common stock for vesting of restricted stock units 0 $ 0 $ 0 0 0 0 0
Issuance of common stock for vesting of restricted stock units, Shares   0 31,235        
Shares withheld related to net share settlement of stock-based awards (63) $ 0 $ 0 (63) 0 0 0
Shares withheld related to net share settlement of stock-based awards, shares   0 (1,587)        
Ending Balance at Sep. 30, 2018 382,691 $ 0 $ 4 97,375 (4) 285,116 200
Ending Balance, Shares at Sep. 30, 2018   0 38,651,360        
Beginning Balance at Dec. 31, 2018 409,574 $ 0 $ 4 97,458 (4) 311,341 775
Beginning Balance, Shares at Dec. 31, 2018   0 38,814,464        
Net and comprehensive income 57,842 $ 0 $ 0 0 0 56,209 1,633
Stock-based compensation 7,040 $ 0 $ 0 7,040 0 0 0
Stock-based compensation, Shares   0 0        
Shares issued pursuant to employee stock purchase plan 338 $ 0 $ 0 338 0 0 0
Shares issued pursuant to employee stock purchase plan, Shares   0 11,022        
Issuance of common stock for vesting of restricted stock units 0 $ 0 $ 0 0 0 0 0
Issuance of common stock for vesting of restricted stock units, Shares   0 366,476        
Issuance of common stock for unvested restricted stock awards 0 $ 0 $ 0 0 0 0 0
Issuance of common stock for unvested restricted stock awards, Shares   0 12,806        
Shares withheld related to net share settlement of stock-based awards (2,694) $ 0 $ 0 (2,694) 0 0 0
Shares withheld related to net share settlement of stock-based awards, shares   0 (72,532)        
Ending Balance at Sep. 30, 2019 472,100 $ 0 $ 4 102,142 (4) 367,550 2,408
Ending Balance, Shares at Sep. 30, 2019   0 39,132,236        
Beginning Balance at Jun. 30, 2019 450,513 $ 0 $ 4 100,098 (4) 348,258 2,157
Beginning Balance, Shares at Jun. 30, 2019   0 39,090,861        
Net and comprehensive income 19,543 $ 0 $ 0 0 0 19,292 251
Stock-based compensation 2,114 $ 0 $ 0 2,114 0 0 0
Stock-based compensation, Shares   0 0        
Shares issued pursuant to employee stock purchase plan 0 $ 0 $ 0 0 0 0 0
Shares issued pursuant to employee stock purchase plan, Shares   0 0        
Issuance of common stock for vesting of restricted stock units 0 $ 0 $ 0 0 0 0 0
Issuance of common stock for vesting of restricted stock units, Shares   0 41,257        
Issuance of common stock for unvested restricted stock awards 0 $ 0 $ 0 0 0 0 0
Issuance of common stock for unvested restricted stock awards, Shares   0 2,264        
Shares withheld related to net share settlement of stock-based awards (70) $ 0 $ 0 (70) 0 0 0
Shares withheld related to net share settlement of stock-based awards, shares   0 (2,146)        
Ending Balance at Sep. 30, 2019 $ 472,100 $ 0 $ 4 $ 102,142 $ (4) $ 367,550 $ 2,408
Ending Balance, Shares at Sep. 30, 2019   0 39,132,236