Debt, Capital Leases and Notes Payable, Line of Credit Facility (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 Director	Sep. 30, 2013	Jun. 30, 2014	Jan. 31, 2014
Line of Credit Facility [Line Items]
Total borrowing availability	$ 35,000		$ 35,000
Debt to EBITDA ratio	3		3
Debt to EBITDA ratio after declining	2.75		2.75
Consolidated debt to EBITDA ratio	2.40		2.40
Financial covenants minimum tangible net worth requirement	11,109		11,109		11,000
Percentage of consolidated income considered for financial covenant (in hundredths)			0.50%
EBITDA to fixed charge ratio	0.99		0.99
EBITDA to fixed charge ratio increase in period one	0.80		0.80
EBITDA to fixed charge ratio increase in period two	0.90		0.90
EBITDA to fixed charge ratio increase in period three	1.00		1.00
Financial covenants tangible net worth requirement	13,373		13,373
Amortization of financing costs			883
Amortization of debt discount			583
Interest expense			2,718
Supplier financing cost	0	217	305	553
Related Party Transaction [Line Items]
Number of current directors or stockholders as insider participants			5
Number of current directors who are insider participants			3
Number of shares of common stocks entitled by warrants (in shares)	1,731		1,731			475
Exercise price of warrants (in dollars per share)						$ 3.04
Insider Participants [Member]
Related Party Transaction [Line Items]
Number of shares of common stocks entitled by warrants (in shares)	131		131
Exercise price of warrants (in dollars per share)	$ 2.30		$ 2.30
Warrants, expiration date			Apr. 30, 2020
Non Insider Participants [Member]
Related Party Transaction [Line Items]
Exercise price of warrants (in dollars per share)	$ 1.20		$ 1.20
Warrants, expiration date			Apr. 30, 2020
Number of shares of common stocks entitled by warrants by insider participants(in shares)	300		300
Warrants settlement (in shares)			219
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Total borrowing availability	15,000		15,000
Expiration date			Jun. 20, 2019
Commitment fee percentage (in hundredths)			0.50%
Deferred loan costs capitalized	211		211
Weighted-average interest rate (in hundredths)	4.41%		4.41%
Borrowing availability	7,500		7,500
Remaining borrowing availability	7,500		7,500
Revolving Credit Facility [Member] | Federal Funds [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate (in hundredths)			0.50%
Revolving Credit Facility [Member] | LIBOR [Member]
Line of Credit Facility [Line Items]
Description of variable rate basis			LIBOR for a three-month
Basis spread on variable rate (in hundredths)			1.00%
Revolving Credit Facility [Member] | LIBOR [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Description of variable rate basis			a one-, two-, three- or six-month LIBOR rate
Basis spread on variable rate (in hundredths)			4.25%
Revolving Credit Facility [Member] | Base Rate [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate (in hundredths)			3.25%
Prior Senior Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Amortization of debt discount			$ 677