Debt Revolving Credit Agreement (Details) (Revolving Credit Facility [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended			6 Months Ended
	Jun. 30, 2014	Jan. 21, 2014	Dec. 15, 2011	Jun. 30, 2014 Minimum	Jun. 30, 2014 Maximum
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 125,000		$ 100,000
Credit Facility Incremental Commitment		25,000
Line of Credit, Terms, Provision to Increase the Aggregate Amount of Commitments Under Certain Conditions, Amount	25,000
Weighted average interest rate for borrowings	3.92%
Ratio of EBITDA to fixed charges, springing covenant	(0.33)			1.1
Line of Credit Facility, Borrowing Capacity excluding minimum excess availability, springing covenant	76,617
Percentage of excess availability to calculated borrowing base				10.00%	12.50%
Excess Availability, upper bound, Springing Covenant					15,625
Excess Availability, lower bound, springing covenant				12,500
Excess availability, revolving credit facility	$ 92,242