Net Income (Loss) and Income (Loss) per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Numerator [Abstract]
Income (loss) from continuing operations	$ 13,214	$ 4,635	$ 6,602	$ (3,196)
Loss from discontinued operations	0	(8,820)	0	(8,540)
Net Income (Loss)	$ 13,214	$ (4,185)	$ 6,602	$ (11,736)
Denominator [Abstract]
Weighted-average shares outstanding (in shares)	17,028,000	16,823,000	16,990,000	16,789,000
Effect of unvested restricted stock awards considered participating securities (in shares)	270,000	224,000	301,000	0
Weighted-average shares outstanding - basic (in shares)	17,298,000	17,047,000	17,291,000	16,789,000
Effect of diluted restricted stock and performance share awards (in shares)	79,000	112,000	132,000	0
Weighted-average shares outstanding - diluted (in shares)	17,377,000	17,159,000	17,423,000	16,789,000
Income (loss) from continuing operations - basic (in dollars per share)	$ 0.76	$ 0.27	$ 0.38	$ (0.19)
Loss from discontinued operations - basic (in dollars per share)	0	(0.52)	0	(0.51)
Net income (loss) per share - basic (in dollars per share)	0.76	(0.25)	0.38	(0.70)
Income (loss) from continuing operations - diluted (in dollars per share)	0.76	0.27	0.38	(0.19)
Loss from discontinued operations - diluted (in dollars per share)	0	(0.52)	0	(0.51)
Net income (loss) per share - diluted (in dollars per share)	$ 0.76	$ (0.25)	$ 0.38	$ (0.70)
Stock Options, Restricted Stock Units, Restricted Stock Awards and Performance Share Awards [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stock options, restricted stock units, restricted stock awards, and performance share awards excluded from the calculation of diluted earnings per share because their effect would have been anti-dilutive (in shares)	443	774	447	799