Current Liabilities and Debt Obligations (Details) (USD $)	3 Months Ended		6 Months Ended		12 Months Ended				6 Months Ended				0 Months Ended	3 Months Ended		6 Months Ended			0 Months Ended	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2010	Dec. 31, 2012	May 11, 2012 Senior Redeemable Preferred Stock [Member]	Jun. 30, 2011 IT Logistics, Inc [Member]	Jun. 30, 2013 Term Loan [Member]	Jun. 30, 2013 Term Loan [Member] Prime Rate [Member]	Jun. 30, 2013 Term Loan [Member] Federal Funds Rate [Member]	Jun. 30, 2013 Term Loan [Member] LIBOR Rate [Member]	Jul. 31, 2013 Revolving credit [Member]	Jun. 30, 2013 Revolving credit [Member]	Jun. 30, 2012 Revolving credit [Member]	Jun. 30, 2013 Revolving credit [Member]	Jun. 30, 2012 Revolving credit [Member]	Jun. 30, 2013 Revolving credit [Member] LIBOR Rate [Member]	Jul. 01, 2011 Liability Due in Installments [Member] IT Logistics, Inc [Member] Installment	Jun. 30, 2013 Liability Due in Installments [Member] IT Logistics, Inc [Member]	Jun. 30, 2013 Liability Due in Installments [Member] IT Logistics, Inc [Member]	Dec. 31, 2012 Subordinated Promissory Note [Member] IT Logistics, Inc [Member]	Jun. 30, 2012 Subordinated Promissory Note [Member] IT Logistics, Inc [Member]	Jul. 01, 2011 Subordinated Promissory Note [Member] IT Logistics, Inc [Member]	Jun. 30, 2013 Short-term [Member] Term Loan [Member]		Dec. 31, 2012 Short-term [Member] Term Loan [Member]	Jun. 30, 2013 Long-term [Member]	Jun. 30, 2013 Long-term [Member] Term Loan [Member]		Dec. 31, 2012 Long-term [Member] Term Loan [Member]	Jun. 30, 2013 Long-term [Member] Revolving credit [Member]
Accounts Payable and Other Accrued Payables [Abstract]
Trade account payables	$ 16,600,000		$ 16,600,000			$ 16,400,000
Accrued trade payables	6,900,000		6,900,000			6,700,000
Senior Revolving Credit Facility [Abstract]
Maximum borrowing capacity, before amendment														25,000,000		25,000,000
Maximum revolving credit facility														30,000,000		30,000,000
Term loan component of Facility					7,500,000	6,100,000
Principal amount of term loan repaid in quarterly installments					93,750
Maturity date													Nov. 13, 2014
Percentage added to reference rate to compute the variable rate (in hundredths)										1.00%	1.50%	2.00%						3.75%
Interest rate on credit facility (in hundredths)	4.25%		4.25%
Interest expense	1,366,000	1,672,000	2,773,000	3,480,000										200,000	200,000	400,000	400,000			1,000	4,000
Discount rate on senior redeemable preferred stock redemption (in hundredths)	10.00%		10.00%				10.00%
Maximum redemption of redeemable preferred stock	2,000,000		2,000,000				4,000,000
Percentage of term loan amortized per year (in hundredths)									5.00%
Amortization of debt issuance costs			36,000	36,000					400,000
Outstanding borrowing of credit facility	13,600,000		13,600,000			18,900,000			6,400,000																400,000		400,000		6,000,000		6,600,000
Remaining borrowing capacity	7,000,000		7,000,000			2,200,000
Weighted average interest rates on outstanding borrowings (in hundredths)														5.40%	5.30%	5.40%	5.30%
Maturities of facility presented by year [Abstract]
2013	375,000		375,000																						375,000	[1]		0	0	[1]		0	[2]
2014	13,199,000		13,199,000																						0	[1]		13,199,000	6,000,000	[1]		7,199,000	[2]
Total	13,574,000		13,574,000																						375,000	[1]		13,199,000	6,000,000	[1]		7,199,000	[2]
Notes payable - IT Logistics, Inc [Abstract]
Cash paid at inception of acquisition								8,000,000
Note payable amount due in installments																			7,000,000
Number of installments																			10
Monthly installments due																			700,000
Interest rate of notes (in hundredths)																			0.50%					6.00%
Face value of debt instrument																							15,000,000	15,000,000
Payment consented by the financial institution																						7,600,000
Principal repayment																						7,500,000
Accrued interest																						100,000
Prepayment discount (in hundredths)																						50.00%
Gain due to prepayment of note																						5,200,000
Warranty Liability [Abstract]
Accrued warranty liability	$ 100,000		$ 100,000			$ 200,000

[1] The principal will be repaid in quarterly installments of $93,750, with a final installment of the unpaid principal amount payable on November 13, 2014.

[2] Balance due represents balance as of June 30, 2013, with fluctuating balances based on working capital requirements of the Company.