Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Allowance for doubtful accounts	$ 399	$ 581
Par value (in USD per share)	$ 0.0001	$ 0.0001
Shares authorized	50,000,000	50,000,000
Shares issued	17,198,049	15,746,288
Shares outstanding	17,198,049	15,746,288
Notes Payable, Current [Member]
Unamortized discount	$ 253	$ 250
Notes Payable, Noncurrent [Member]
Unamortized discount	$ 704	$ 758

A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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