ORGANIZATION AND OPERATIONS (Details)	Apr. 29, 2014 $ / shares	Mar. 11, 2014 shares	Sep. 30, 2016 $ / shares shares	Dec. 31, 2015 $ / shares shares	Apr. 28, 2014 shares
Organization and operations
Common shares authorized (in shares)			900,000,000	900,000,000
Reverse stock split ratio	0.2
Common stock, par value (in usd per share) | $ / shares	$ 0.001		$ 0.001	$ 0.001
PMC Commercial
Organization and operations
Common shares authorized before amendment (in shares)					100,000,000
Common shares authorized (in shares)					1,000,000,000
PMC Commercial | Urban Partners II, LLC
Organization and operations
Number of shares issued on conversion of each preferred stock (in shares)		1.4
Aggregate shares of common stock issued in the merger (in shares)		95,440,000
Number of shares issued on conversion of preferred stock expressed as a percentage of outstanding stock		97.80%
Common Stock | PMC Commercial | Urban Partners II, LLC
Organization and operations
Shares issued (in shares)		4,400,000
Preferred Stock | PMC Commercial | Urban Partners II, LLC
Organization and operations
Shares issued (in shares)		65,000,000
Common Stock | PMC Commercial
Organization and operations
Common shares authorized (in shares)					900,000,000
Preferred Stock | PMC Commercial
Organization and operations
Common shares authorized (in shares)					100,000,000