Summary of Significant Accounting Policies - Basic and Diluted Shares Outstanding (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Accounting Policies [Abstract]
Weighted average common shares outstanding-Basic	21,158	20,839	21,091	20,726
Effect of dilutive options (in shares)	33	39	66	35
Weighted average common shares outstanding-Diluted	21,191	20,878	21,157	20,761
Options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities (in shares)	298	113	124	113