Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Earnings Per Share Reconciliation [Abstract]
Net income (loss)	$ (4,625)	$ 14,421
Weighted average common shares outstanding (in shares)	40,738	40,792
Assumed dilutive effect of stock option exercise (in shares)	0	0
Weighted average common shares outstanding assuming dilution (in shares)	40,738	40,792
Net income (loss) per common share - basic (in dollars per share)	$ (0.11)	$ 0.35
Net income (loss) per common share - assuming dilution (in dollars per share)	$ (0.11)	$ 0.35
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	0	0