Earnings Per Share (Details) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Earnings Per Share Diluted [Line Items]
Weighted average shares used for basic EPS	18,798	27,244	20,792	27,391
Dilutive effect of stock options and other share-based awards	179	351	273	439
Dilutive effect of convertible debt	170	421	307	752
Weighted average shares used for diluted EPS	19,147	28,016	21,372	28,582
Stock options and share-based awards [Member]
Earnings Per Share Diluted [Line Items]
Stock options and share-based awards not included in diluted EPS calculation because their effect would be antidilutive	226	19	16	67