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Stockholder's Equity - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended		9 Months Ended
	Apr. 03, 2017	May 09, 2016	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Subsidiary, Sale of Stock [Line Items]
Business acquisition, equity interest issued or issuable, number of shares	1,882,058
Share consideration given for Tealstone acquisition (1,882,058 shares)					$ 17,061	$ 0
Allocated share-based compensation expense			$ 600	$ 400	2,500	1,200
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized			$ 1,100	$ 2,300	$ 1,100	$ 2,300
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized, period for recognition					1 year 7 months 6 days
Share-based compensation arrangement by share-based payment award, equity instruments other than options, nonvested, number			500,000		500,000
Former chief executive officer
Subsidiary, Sale of Stock [Line Items]
Allocated share-based compensation expense			$ 700		$ 700
Restricted stock
Subsidiary, Sale of Stock [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period (in shares)			8,000		174,410
Warrants to the Lenders Under the Loan Agreement
Subsidiary, Sale of Stock [Line Items]
Warrants and rights outstanding	$ 3,500		$ 3,500		$ 3,500
Warrants to the Lenders Under the Loan Agreement | Loan and security agreement
Subsidiary, Sale of Stock [Line Items]
Class of warrant or right, term	5 years
Class of warrant or right, number of securities called by warrants or rights (in shares)	1,000,000
Class of warrant or right, exercise price of warrants or rights (USD per share)	$ 10.25
D.A. davidson and co.
Subsidiary, Sale of Stock [Line Items]
Stock issued during period, shares, new issues		5,175,000
Share price (USD per share)		$ 4.00
Share price, net (USD per share)		$ 3.77
Net proceeds from stock issued		$ 19,100
Tealstone
Subsidiary, Sale of Stock [Line Items]
Business acquisition, equity interest issued or issuable, number of shares	1,882,058
Share consideration given for Tealstone acquisition (1,882,058 shares)	$ 17,061

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