The Company (Details) - USD ($)					1 Months Ended		3 Months Ended		6 Months Ended
	Jun. 23, 2015	Jun. 22, 2015	Jan. 31, 2015	May. 12, 2014	Jun. 30, 2015	May. 31, 2015	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Derivatives [Abstract]
Derivative instruments liabilities					$ 228,000		$ 228,000		$ 228,000
Amount recognized as financing income									79,000
Notional amounts of foreign currency derivatives					2,000,000		2,000,000		2,000,000
Activity in warranty accrual [Roll Forward]
Accrual at beginning of year									529,000	$ 890,000
Additions charged to warranty expense									79,000	221,000
Expiring warranties									(22,000)	(47,000)
Claims satisfied									(206,000)	(367,000)
Total					380,000		$ 380,000	$ 697,000	$ 380,000	$ 697,000
Weighted-average number of common and common equivalent shares outstanding [Abstract]
Basic number of common shares outstanding (in shares)							21,488,832	18,723,484	20,308,391	18,721,463
Dilutive effect of stock options and warrants (in shares)							0	0	0	0
Diluted number of common and common stock equivalent shares outstanding (in shares)							21,488,832	18,723,484	20,308,391	18,721,463
Common stock options and warrants excluded from computation of diluted earnings per share (in shares)							2,423,601	2,550,516	2,423,601	2,550,516
Minimum [Member]
Warranty on Product Sales [Line Items]
Period of warranty on product sales									1 year
Maximum [Member]
Warranty on Product Sales [Line Items]
Period of warranty on product sales									2 years
Senior-Secured Credit Facilities [Member]
Business Acquisition [Line Items]
Maximum borrowing capacity				$ 85,000,000
Revolving Credit Facility [Member]
Business Acquisition [Line Items]
Maximum borrowing capacity				10,000,000
Term Loan [Member]
Business Acquisition [Line Items]
Maximum borrowing capacity				$ 75,000,000
Term loan period				4 years
Prepayments on term loan									$ 125,000
Minimum amount of cash specified against payment of revolving loans					5,000,000		$ 5,000,000		5,000,000
Forbearance Agreement [Member]
Business Acquisition [Line Items]
Prepayments on term loan									250,000
Minimum amount of cash specified against payment of revolving loans					$ 7,000,000		$ 7,000,000		$ 7,000,000
Percentage of exceeded cash on hand to be paid against revolving loans (in hundredths)					100.00%		100.00%		100.00%
Lenders fee					$ 750,000	$ 750,000
Lender fee payable					500,000		$ 500,000		$ 500,000
Forbearance Agreement [Member] | Fee Payment Each Month For May and June 2015 [Member]
Business Acquisition [Line Items]
Lenders fee					$ 750,000	$ 750,000
LCA-Vision [Member]
Business Acquisition [Line Items]
Effective date of merger									May 12, 2014
Percentage of shares acquired by wholly-owned subsidiary (in hundredths)					100.00%		100.00%		100.00%
Percentage of shares sold for wholly-owned subsidiary (in hundredths)			100.00%
Cash consideration from sale of business			$ 40,000,000
Net proceeds from sale of business			$ 37,700,000
XTRAC and VTRAC Business [Member]
Business Acquisition [Line Items]
Cash consideration from sale of business		$ 42,500,000
Net proceeds from sale of business		41,000,000
Restricted cash held in escrow		$ 750,000
Repayment of credit facilities and ancillary costs	$ 40,300,000