Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2016

Significant Accounting Policies

Schedule of vendors which accounted for 10% or more of the Company's raw material purchases

		Three Months Ended
		March 31,
Vendor	Supplies	2016	2015
A	Substrates	36%	39%
B	Substrates	*	11%
* less than 10%

Schedule of warrant liability measured at fair value on a recurring basis

The valuation inputs hierarchy classification for the warrant liability measured at fair value on a recurring basis is summarized as follows (in thousands):

Warrant liability	Level 1	Level 2	Level 3
March 31, 2016	-	-	$	1,537
December 31, 2015	-	-	$	3,072

Schedule of reconciliation of warrant liability

The following is a reconciliation of the warrant liability, included in accrued expenses and other current liabilities in the accompanying unaudited condensed consolidated balance sheets, measured at fair value using Level 3 inputs (in thousands):

	Three Months Ended
	March 31,
	2016		2015
Balance at beginning of period	$	3,072	$	1,474
Issuance of common stock warrants	-			-
Exercise of common stock warrants	(739)			-
Remeasurement of common stock warrants	(796)			529
Balance at end of period	$	1,537	$	2,003