Incentive Plans (Details) shares in Thousands	6 Months Ended
	Jun. 30, 2015 $ / shares shares
Incentive Plans [Line Items]
Weighted Average Grant Price, Unvested shares at beginning of period (carry-forward) | $ / shares	$ 11.28
Weighted Average Grant Price, Granted | $ / shares	7.70
Weighted Average Grant Price, Vested | $ / shares	7.60
Weighted Average Grant Price, Forfeited | $ / shares	7.82
Weighted Average Grant Price, Unvested shares at March 31, 2015 | $ / shares	$ 7.71
Restricted Stock [Member]
Incentive Plans [Line Items]
Unvested shares at December 31, 2014	288
Granted	56
Vested	(67)
Forfeited	(43)
Unvested shares at March 31, 2015	234