Loan Agreement Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Line of Credit Facility [Line Items]
Bank Overdrafts	$ 5,500,000
Secured Debt, Current	$ 14,543,000	$ 841,000
Credit Facility (Textual) [Abstract]
Eligible accounts receivables percentage	85.00%
Eligible accounts receivables past due days	60 days
Eligible inventory percentage	60.00%
Eligible inventory expected to be sold period	18 months
Maximum borrowing amount based on inventory	$ 20,000,000
Interest Paid	$ 600,000	$ 200,000	$ 500,000
Weighted average interest rate	3.20%
Letters of Credit Outstanding, Amount	$ 1,700,000
Excess cash capacity	$ 10,000,000
Maximum
Credit Facility (Textual) [Abstract]
Spread on LIBOR	1.85%
Dividends restricted amount	$ 7,000,000.0
Minimum
Credit Facility (Textual) [Abstract]
Spread on LIBOR	1.50%
Revolving Credit Facility [Member]
Credit Facility (Textual) [Abstract]
Credit facility, borrowing capacity	$ 40,000,000
Letter of Credit [Member]
Credit Facility (Textual) [Abstract]
Credit facility, borrowing capacity	10,000,000
Lawson [Member]
Line of Credit Facility [Line Items]
Secured Debt, Current	13,626,000
Credit Facility (Textual) [Abstract]
Credit Facility, remaining borrowing capacity	22,800,000
Bolt [Member] [Member]
Line of Credit Facility [Line Items]
Secured Debt, Current	1,153,000
Credit Facility (Textual) [Abstract]
Credit Facility, remaining borrowing capacity	$ 4,300,000