Earnings Per Share (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Reconciliation of shares used for basic and diluted earnings per share [Abstract]
Shares used in basic diluted per share calculations (in shares)	19,296	19,244	19,278	19,213
Dilutive effect of stock-based awards (in shares)	147	99	123	0
Shares used for diluted EPS (in shares)	19,443	19,343	19,401	19,213
Stock-based awards not included in diluted per share calculations as they would be antidilutive (in shares)	0	116	0	290