Capital Structure - (Detail)				1 Months Ended		12 Months Ended
	Nov. 24, 2013 USD ($)	Oct. 07, 2013 USD ($) shares	Apr. 16, 2010 USD ($) shares	Oct. 31, 2013	Apr. 30, 2010 shares	Dec. 31, 2015 $ / shares Vote class shares	Dec. 31, 2012 $ / shares shares	Nov. 24, 2015 shares	Dec. 31, 2014 shares	Oct. 06, 2013 shares
Class Of Stock [Line Items]
Number of classes of common stock | class						2
Ownership percentage						30.00%
Proceeds from issuance of redeemable preferred stock | $			$ 30,000,000
Proceeds from sale of preferred stock | $			$ 10,000,000
Preferred units, liquidation preference value | $		$ 49,850,000
Options to acquire shares granted						28,057			652,500
Stock split						0.25
RIHI
Class Of Stock [Line Items]
Redemption of common membership units price per common stock								4,500,000
Redemption of common membership units amount less underwriting discount | $	$ 23,267,000
Weston Presidio
Class Of Stock [Line Items]
Issuance of redeemable preferred units			37,500
RMCO, LLC
Class Of Stock [Line Items]
Preferred units, redemption rate						10.00%
Redemption of common membership units price per common stock		3,750,000
Redemption of common membership units amount less underwriting discount | $		$ 76,931,250
Common units outstanding						30,143,951			29,502,641
Stock split				25
RMCO, LLC | Weston Presidio
Class Of Stock [Line Items]
Preferred units, liquidation preference value | $		$ 49,850,000
Class B common stock
Class Of Stock [Line Items]
Units exchanged for ownership interest					847,500
Common stock, par value | $ / shares						$ 0.0001
Class B common stock | RMCO, LLC
Class Of Stock [Line Items]
Number of votes for common class holders, for each Common Unit in RMCO held by the holder (in votes) | Vote						2
Number of votes for common class holders, as a multiple of the aggregate number of Common Units in RMCO held by the holder upon occurrence of certain events (as a percent)						1.00%
Stock split						0.25
Common Units
Class Of Stock [Line Items]
Number of votes for common class holders, as a multiple of the aggregate number of Common Units in RMCO held by the holder (as a percent)						2.00%
Common Units | RIHI
Class Of Stock [Line Items]
Redemption of common units		3,452,900
Common Units | RMCO, LLC
Class Of Stock [Line Items]
Number of votes for common class holders, as a multiple of the aggregate number of Common Units in RMCO held by the holder upon occurrence of certain events (as a percent)						1.00%
Class A Preferred Units
Class Of Stock [Line Items]
Units exchanged for ownership interest					37,500
Class A Preferred Units | Weston Presidio
Class Of Stock [Line Items]
Issuance of redeemable preferred units			112,500
Class A Preferred Units | RMCO, LLC
Class Of Stock [Line Items]
Preferred Units, authorized							150,000
Preferred units, issued							150,000
Preferred Units, outstanding							150,000
Preferred stock, no par value | $ / shares							$ 0
Class B Common Units | RIHI
Class Of Stock [Line Items]
Common stock, units authorized							847,500
Common units outstanding							847,500
Common units issued							847,500
Common stock, par value | $ / shares							$ 0
Redemption of common units							0
Class B Common Units | RMCO, LLC
Class Of Stock [Line Items]
Common stock, units authorized							900,000
Class B Common Units | RMCO, LLC | Common unit options
Class Of Stock [Line Items]
Common stock reserved for issuance under a unit option plan										52,500
Class B Common Units | RMCO, LLC | Employees
Class Of Stock [Line Items]
Options to acquire shares granted		31,500
New options issued to replace old options							31,500
Class A common stock
Class Of Stock [Line Items]
Number of votes per share held | Vote						1
Common stock, par value | $ / shares						$ 0.0001
New options issued to replace old options						787,500
Stock split		1
Class A common stock | RIHI
Class Of Stock [Line Items]
Redemption of common membership units amount less underwriting discount | $		$ 70,836,244
Class A common stock | RMCO, LLC
Class Of Stock [Line Items]
Options to acquire shares granted						787,500
Stock split	1