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STOCKHOLDERS' EQUITY - Warrants (Details) - $ / shares						1 Months Ended	6 Months Ended
	Jun. 17, 2016	Mar. 09, 2016	Dec. 08, 2015	Aug. 03, 2015	Nov. 01, 2010	Nov. 30, 2010	Jun. 30, 2016	Dec. 31, 2014
Class of Stock [Line Items]
Exercise price of warrants for non-voting common stock (in dollars per share)					$ 11		$ 8.84
Cor Advisors Llc
Class of Stock [Line Items]
Warrants issued (in shares)					1,395,000
Exercise price of warrants for non-voting common stock (in dollars per share)					$ 11.00
Common Stock | Class B Common Stock
Class of Stock [Line Items]
Issuance of shares of voting common stock				70,690
Common Stock | Class A Common Stock
Class of Stock [Line Items]
Issuance of shares of voting common stock				70,690			5,915,988
Tcw Shared Opportunity Fund
Class of Stock [Line Items]
Warrants issued (in shares)					240,000	240,000		240,000
Exercise price of warrants for non-voting common stock (in dollars per share)				$ 9.13	$ 11.00
Warrant exercisable period					5 years	5 years
President And Chief Executive Officer | Cor Advisors Llc
Class of Stock [Line Items]
Warrants issued (in shares)					960,000
President And Chief Executive Officer | Cor Advisors Llc | Vested on October 1, 2011
Class of Stock [Line Items]
Warrants issued (in shares)					50,000
President And Chief Executive Officer | Cor Advisors Llc | Vested on January 1, 2012
Class of Stock [Line Items]
Warrants issued (in shares)					50,000
President And Chief Executive Officer | Cor Advisors Llc | Vested on April 1, 2012
Class of Stock [Line Items]
Warrants issued (in shares)					50,000
President And Chief Executive Officer | Cor Advisors Llc | Vested on July 1, 2012
Class of Stock [Line Items]
Warrants issued (in shares)					50,000
President And Chief Executive Officer | Cor Advisors Llc | Vested on October 1, 2012
Class of Stock [Line Items]
Warrants issued (in shares)					50,000
President And Chief Executive Officer | Cor Advisors Llc | Vested on January 1, 2013
Class of Stock [Line Items]
Warrants issued (in shares)					50,000
President And Chief Executive Officer | Cor Advisors Llc | Vested on April 1, 2013
Class of Stock [Line Items]
Warrants issued (in shares)					50,000
President And Chief Executive Officer | Cor Advisors Llc | Vested on July 1, 2013
Class of Stock [Line Items]
Warrants issued (in shares)					50,000
Vice President and Chief Lending Officer
Class of Stock [Line Items]
Exercise price of warrants for non-voting common stock (in dollars per share)	$ 8.84	$ 8.90	$ 9.04
Vice President and Chief Lending Officer | Cor Advisors Llc
Class of Stock [Line Items]
Warrants issued (in shares)					435,000		80,000
Issuance of shares of voting common stock	70,775	53,711	37,355
Warrants exercised (in shares)	130,000	130,000	95,000
Vice President and Chief Lending Officer | Cor Advisors Llc | Vested on October 1, 2011
Class of Stock [Line Items]
Warrants issued (in shares)					80,000
Vice President and Chief Lending Officer | Cor Advisors Llc | Vested on January 1, 2011
Class of Stock [Line Items]
Warrants issued (in shares)					95,000
Vice President and Chief Lending Officer | Cor Advisors Llc | Vested on April 1, 2011
Class of Stock [Line Items]
Warrants issued (in shares)					130,000
Vice President and Chief Lending Officer | Cor Advisors Llc | Vested on July 1, 2011
Class of Stock [Line Items]
Warrants issued (in shares)					130,000

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Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(i)(4))
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Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

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