Basis of Presentation (Tables)

6 Months Ended

Jun. 30, 2011

Basis of Presentation

Reconciliation of basic weighted average shares outstanding and diluted weighted average shares outstanding

	Three months ended		Six months ended
	June 30,		June 30,
	2011	2010	2011	2010
Basic weighted average shares outstanding	40,998	39,761	40,433	39,283
Dilutive effect of stock options and restricted stock	1,066	2,327	1,108	1,215
Dilutive effect of convertible notes	938	1,418	1,239	1,185
Diluted weighted average shares outstanding	43,002	43,506	42,780	41,683