Earnings Per Share (Details) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Reconciliation of shares used for basic and diluted earnings per share [Abstract]
Weighted average common shares used for basic EPS (in shares)	18,937	18,872	18,916	18,858
Dilutive effect of stock-based awards (in shares)	130	82	94	74
Shares used for diluted EPS (in shares)	19,067	18,954	19,010	18,932
Stock-based awards not included in diluted per share calculations as they would be antidilutive (in shares)	0	46	38	109