Debt (Additional Information) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2011
Line of Credit Facility [Line Items]
Revolving credit facility		$ 100,000,000
2011 Loan Agreement borrowing base, percentage of value of eligible accounts receivable		85.00%
2011 Loan Agreement borrowing base, percentage of value of eligible inventory		65.00%
Description of the loan converted	Portions of the loan may be converted to LIBOR loans in minimum amounts of $1,000 and integral multiples of $100
Integral amount used to be added to minimum base	$ 100,000
Description of interest rate	LIBOR loans bear interest at the British Bankers Association LIBOR Rate plus 125 to 200 basis points based on availability, and loans not converted to LIBOR loans bear interest at a fluctuating rate equal to the greatest of the agent’s prime rate, the federal funds rate plus 50 basis points, or 30-day LIBOR plus 150 basis points.
Line of Credit Facility, Commitment Fee Description	Unused commitment fees are 25 or 30 basis points, depending on the amount of the unused commitment.