Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2014

Earnings Per Share [Abstract]

Reconciliation of Shares Used in Calculating Earnings Per Basic and Diluted Shares

A reconciliation of shares used in calculating earnings per basic and diluted shares follows (in thousands):

	Three Months Ended June 30,		Six Months Ended June 30,
	2014	2013	2014	2013
Weighted average common shares outstanding—basic	25,798	23,966	25,774	23,707
Dilutive effect of stock-based awards	651	849	800	945
Dilutive effect of convertible senior notes	1,043	40	1,195	—
Dilutive effect of warrants	—	—	21	—
Weighted average common shares outstanding—diluted	27,492	24,855	27,790	24,652