Significant Accounting Policies (Details Textual) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	12 Months Ended
	Jun. 30, 2014	Dec. 31, 2014	Dec. 31, 2013
Schedule Of Significant Accounting Policies [Line Items]
Equity and Noncontrolling interest		20.00%
Allowance for uncollectible accounts receivable		$ 936	$ 1,837
Deferred revenue		112	0
Write-off non-core inventory		2,005	1,340
Inventory finished goods		2,364	5,120
Inventory parts		171	310
Inventory supplies		316	850
Reserve for obsolete and damaged inventory		916	1,278
Increase in reserve for obsolete and damaged inventory		The Company now estimates that finished units held for sale will be reserved beginning in year three and fully reserved after four years compared to five years previously.
Increase in reserve for obsolete and damaged inventory		414
Cost of revenue - Sales		4,185	6,767
Open purchase commitments		270
Write-off rental units	650	650
Advertising expense		47	115
Research and development expense		394	754
Company accrued unrecognized tax benefits, penalties and interest		250	194
Software and development costs
Schedule Of Significant Accounting Policies [Line Items]
Amortization Life Years		5 years
Inventory Valuation and Obsolescence
Schedule Of Significant Accounting Policies [Line Items]
Cost of revenue - Sales		$ 460
Increase in cost of revenue per share		$ 0.02