Stockholders' Equity (Details Textual) - USD ($)				1 Months Ended							12 Months Ended
	Aug. 05, 2016	Aug. 10, 2015	Oct. 10, 2014	Nov. 18, 2017	Dec. 31, 2016	Nov. 18, 2016	Aug. 31, 2015	Aug. 29, 2015	Aug. 10, 2015	Jul. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Stockholders Equity [Line Items]
Proceeds from Stock Options Exercised													$ 4,000
Proceeds from Issuance or Sale of Equity						$ 23,300,000					$ 1,509,000	$ 0	0
Stock Issued During Period, Value, New Issues											$ 24,384,000	$ 42,643,000	$ 11,647,000
Sale of Stock, Price Per Share						$ 1.00
Fbr Capital Markets Co [Member]
Stockholders Equity [Line Items]
Stock Issued During Period, Shares, New Issues	900,628
Proceeds from Issuance of Common Stock for Exclusive Channel Collaboration Agreement	$ 1,550,197
Stock Issued During Period, Value, New Issues	$ 40,000,000
Brokerage Commission percentage	3.00%
Channel Collaboration Agreement [Member]
Stockholders Equity [Line Items]
Shares, Issued		937,500							937,500
Stock Issued		$ 3,000,000							$ 3,000,000
Stock Purchase Agreement [Member]
Stockholders Equity [Line Items]
Conversion of Stock, Shares Converted								1,350,000
Conversion of Stock, Shares Issued							1,350,000	1,350,000
Employee Stock Option [Member]
Stockholders Equity [Line Items]
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Exercises In Period											445,334	35,006	6,583
Proceeds from Stock Options Exercised											$ 814,000	$ 41,000
Prev Abr Llc [Member]
Stockholders Equity [Line Items]
Stock Issued During Period, Shares, New Issues												655,321
Equity Issued in Business Combination, Fair Value Disclosure												$ 1,350,000
Warrant [Member]
Stockholders Equity [Line Items]
Stock Issued During Period Shares Cash less Warrant Exercises													232,619
IPO [Member]
Stockholders Equity [Line Items]
Stock Issued During Period, Shares, New Issues			14,059,616	25,000,000		25,000,000
Common Stock, Closing Price, Per Share			$ 1.47
Noninterest Expense Offering Cost			$ 1,600,000
Proceeds from Issuance Initial Public Offering			20,700,000
Proceeds from Issuance or Sale of Equity			$ 19,100,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights						50,000,000
Sale of Stock, Price Per Share						$ 1.00
IPO [Member] | Series A Warrants [Member]
Stockholders Equity [Line Items]
Class of Warrant or Right, Exercise Price of Warrants or Rights						1.43
IPO [Member] | Series B Warrants [Member]
Stockholders Equity [Line Items]
Class of Warrant or Right, Exercise Price of Warrants or Rights						$ 1.72
Investment Warrants Expiration Date1					Dec. 31, 2017	Dec. 31, 2017
Private Placement [Member]
Stockholders Equity [Line Items]
Stock Issued During Period, Shares, New Issues										15,333,333
Noninterest Expense Offering Cost										$ 3,400,000
Proceeds from Issuance Initial Public Offering										42,600,000
Gross Proceeds From Issuance Initial Public Offering										46,000,000
Stock Issued During Period, Value, New Issues										$ 2,000,000
Shares Issued, Price Per Share										$ 3.00