Current Liabilities and Debt Obligations (Details) - USD ($)	3 Months Ended				6 Months Ended
	Jun. 30, 2016	Mar. 31, 2016	Jun. 30, 2015	Mar. 31, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015	Dec. 24, 2014	Apr. 20, 2007
Accounts Payable and Other Accrued Payables [Abstract]
Trade account payables	$ 13,200,000				$ 13,200,000		$ 9,300,000
Accrued trade payables	$ 4,200,000				$ 4,200,000		3,400,000
Senior Revolving Credit Facility [Abstract]
Maximum revolving credit facility		$ 10,000,000
Amended expiration date of revolving credit facility					Apr. 01, 2017
Equity or subordinated debt		5,000,000
Fee amount would pay if capital investment is not received by specified date		100,000
Fees paid in connection with amendment		100,000
Percentage of membership interest sold to investor (in hundredths)								10.00%	39.999%
Current line of credit borrowing capacity		2,000,000
Current line of credit borrowing capacity, condition one		2,500,000
Current line of credit borrowing capacity, condition two		3,000,000
Interest rate on credit facility (in hundredths)	5.75%				5.75%
Interest expense	$ 1,385,000		$ 1,444,000		$ 2,781,000	$ 2,771,000
Outstanding borrowing of credit facility	4,800,000				4,800,000		8,500,000
Remaining borrowing capacity	6,000,000				$ 6,000,000		5,800,000
Weighted average interest rates on outstanding borrowings (in hundredths)			6.80%		7.90%
Proceeds from related party, debt					$ 0	2,500,000
Interest Expense, Related Party	$ 75,000	$ 75,000	$ 75,000		$ 149,000	78,000
Debt instrument, fixed interest rate (in hundredths)	12.00%	12.00%			12.00%
Debt instrument, first interest payment due date	Aug. 20, 2015	Aug. 20, 2015
Debt instrument, last principal and interest payment date	Jul. 01, 2017	Jul. 01, 2017
Porter [Member]
Senior Revolving Credit Facility [Abstract]
Related party ownership percentage (in hundredths)	39.30%				39.30%
Prime Rate [Member]
Senior Revolving Credit Facility [Abstract]
Percentage added to reference rate to compute the variable rate (in hundredths)		2.25%
Federal Funds Rate [Member]
Senior Revolving Credit Facility [Abstract]
Percentage added to reference rate to compute the variable rate (in hundredths)		2.75%
LIBOR Rate [Member]
Senior Revolving Credit Facility [Abstract]
Percentage added to reference rate to compute the variable rate (in hundredths)		3.25%
Term Loan [Member]
Senior Revolving Credit Facility [Abstract]
Outstanding borrowing of credit facility	$ 2,500,000				$ 2,500,000		3,200,000
Term Loan [Member] | The "Twelfth Amendment" [Member]
Senior Revolving Credit Facility [Abstract]
Principal amount of term loan repaid in quarterly installments	350,000
Fees paid in connection with amendment	150,000				150,000
Revolving Credit [Member]
Senior Revolving Credit Facility [Abstract]
Maximum revolving credit facility				$ 30,000,000
Line of credit sub-line limit	5,000,000				5,000,000
Interest expense	100,000		$ 200,000		200,000	$ 300,000
Revolving Credit [Member] | The "Twelfth Amendment" [Member]
Senior Revolving Credit Facility [Abstract]
Maximum revolving credit facility	20,000,000				20,000,000
Line of credit sub-line limit	1,000,000				1,000,000
Current line of credit borrowing capacity	$ 1,250,000				$ 1,250,000
First Tranche [Member] | Porter [Member]
Senior Revolving Credit Facility [Abstract]
Proceeds from related party, debt				$ 2,500,000
Subordinated Promissory Note [Member] | Porter [Member]
Senior Revolving Credit Facility [Abstract]
Proceeds from related party, debt		$ 5,000,000
Short-term [Member] | Term Loan [Member]
Senior Revolving Credit Facility [Abstract]
Outstanding borrowing of credit facility							$ 1,400,000