Credit Facilities and Long-Term Debt - Subordinated Note (Details) - USD ($) $ / shares in Units, shares in Millions		3 Months Ended	6 Months Ended	12 Months Ended
	Jul. 22, 2015	Aug. 13, 2015	Jun. 30, 2017	Apr. 21, 2016	Dec. 31, 2016	Nov. 30, 2015	Nov. 16, 2015	Jul. 08, 2015	Apr. 23, 2015
Line of Credit Facility [Line Items]
Risk-free interest rate, minimum			1.90%
Total outstanding debt			$ 37,397,000		$ 66,875,000
Subordinated Debt
Line of Credit Facility [Line Items]
Total outstanding debt			$ 20,600,000		$ 19,403,000
Chief Executive Officer, Director, and Shareholder | VTB Holdings, Inc | Issuance Of Debt, April Notes [Member]
Line of Credit Facility [Line Items]
Related Party Transaction, Rate, Initial Period				10.00%
Related Party Transaction, Rate, Subsequent Period				20.00%
Chief Executive Officer, Director, and Shareholder | VTB Holdings, Inc | Issuance Of Debt, May Notes [Member]
Line of Credit Facility [Line Items]
Related Party Transaction, Rate, Initial Period		10.00%
Related Party Transaction, Rate, Subsequent Period				20.00%
Chief Executive Officer, Director, and Shareholder | Subordinated Debt | VTB Holdings, Inc
Line of Credit Facility [Line Items]
Debt Instrument, Maturity Date	Sep. 29, 2019
Chief Executive Officer, Director, and Shareholder | Subordinated Debt | VTB Holdings, Inc | Issuance Of Debt, April Notes [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Face Amount									$ 5,000,000
Chief Executive Officer, Director, and Shareholder | Subordinated Debt | VTB Holdings, Inc | Issuance Of Debt, May Notes [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Face Amount									3,800,000.0
Debt Instrument, Maturity Date			Aug. 13, 2015
Chief Executive Officer, Director, and Shareholder | Subordinated Debt | VTB Holdings, Inc | Issuance Of Debt, June Notes [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Face Amount									$ 3,000,000.0
Debt Instrument, Maturity Date			Sep. 17, 2015
hear_Debt Instrument, Maximum Capacity			$ 15,000,000
Total outstanding debt	$ 9,000,000
Chief Executive Officer, Director, and Shareholder | Subordinated Debt | VTB Holdings, Inc | Issuance Of Debt, Additional June Notes [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Face Amount								$ 6,000,000.0
Chief Executive Officer, Director, and Shareholder | Subordinated Debt | VTB Holdings, Inc | Issuance Of Debt, November Notes [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Face Amount							$ 2,500,000.0
Debt Instrument, Interest Rate, Stated Percentage							15.00%
Chief Executive Officer, Director, and Shareholder | Promissory Note [Member] | VTB Holdings, Inc | Issuance Of Debt, November Notes [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Face Amount							$ 2,000,000
Debt Instrument, Interest Rate, Stated Percentage							12.00%
London Interbank Offered Rate (LIBOR) [Member] | Chief Executive Officer, Director, and Shareholder | Subordinated Debt | VTB Holdings, Inc
Line of Credit Facility [Line Items]
Basis spread on variable rate			10.50%
London Interbank Offered Rate (LIBOR) [Member] | Chief Executive Officer, Director, and Shareholder | Promissory Note [Member] | VTB Holdings, Inc
Line of Credit Facility [Line Items]
Basis spread on variable rate			10.50%
VTB Holdings, Inc
Line of Credit Facility [Line Items]
Class of Warrant or Right, Outstanding	1.7					1.4
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 2.54					$ 2.00