Net Earnings Per Share (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Income from continuing operations	$ 16,989	$ 4,087	$ 23,482	$ 9,624
Loss from discontinued operations	0	0	0	(28)
Net income	$ 16,989	$ 4,087	$ 23,482	$ 9,596
Weighted average shares outstanding	31,475,000	31,210,000	31,447,000	31,200,000
Common stock options and restricted stock (in shares)	532,000	285,000	469,000	240,000
Weighted average shares outstanding – Diluted	32,007,000	31,495,000	31,916,000	31,440,000
Common shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from earnings per share calculation (in shares)	724,000	489,000	764,000	471,000