Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Detail)

v2.4.1.9
Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Numerator (Basic and Diluted):    
Net income $ 13,669us-gaap_NetIncomeLoss $ 6,782us-gaap_NetIncomeLoss
Denominator:    
Weighted average common shares issued and outstanding 37,066us-gaap_WeightedAverageNumberOfSharesIssuedBasic 36,601us-gaap_WeightedAverageNumberOfSharesIssuedBasic
Deduct: Unvested RSAs (43)us-gaap_WeightedAverageNumberOfSharesRestrictedStock (30)us-gaap_WeightedAverageNumberOfSharesRestrictedStock
Add: Fully vested DSUs 2,006us-gaap_WeightedAverageNumberOfSharesContingentlyIssuable 2,276us-gaap_WeightedAverageNumberOfSharesContingentlyIssuable
Weighted Average Common Shares Outstanding 39,029us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 38,847us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Basic earnings per common share $ 0.35us-gaap_EarningsPerShareBasic $ 0.17us-gaap_EarningsPerShareBasic
Weighted Average Common Shares Outstanding from above 39,029us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 38,847us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Add: Dilutive effect of RSUs, RSAs & ESPP 123us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements 60us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
Weighted Average Common Shares Outstanding 39,152us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 38,907us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Diluted earnings per common share $ 0.35us-gaap_EarningsPerShareDiluted $ 0.17us-gaap_EarningsPerShareDiluted