Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Statement Of Financial Position [Abstract]
Allowance for doubtful accounts	$ 5,461	$ 4,055
Preferred Stock, par value (dollars per share)	$ 0.01	$ 0.01
Preferred Stock, shares authorized (shares)	1,000,000	1,000,000
Preferred Stock, shares issued (shares)	0	0
Preferred Stock, shares outstanding (shares)	0	0
Common Stock, par value (dollars per share)	$ 0.01	$ 0.01
Common Stock, shares authorized (shares)	100,000,000	100,000,000
Common Stock, shares issued (shares)	10,774,857	10,713,658
Common Stock, shares outstanding (shares)	10,616,884	10,555,685
Treasury Stock, shares (shares)	157,973	157,973