Significant Accounting Policies (Details Textual) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Mar. 31, 2014	Dec. 31, 2013
Significant Accounting Policies [Abstract]
Equity and Noncontrolling interest		20.00%
Issuance of noncontrolling interest in ZBC	$ 10
Allowance for uncollectible accounts receivable		1,837	1,837
Inventory finished goods		5,033
Inventory parts		377
Inventory supplies		893
Reserve for obsolete and damaged inventory		1,292	1,278
Open purchase commitments		$ 703