Shareholders' Equity - Additional Information (Detail)							1 Months Ended		6 Months Ended		12 Months Ended
	Aug. 08, 2016 shares	Jul. 25, 2016 shares	Jul. 11, 2016 $ / shares shares	Jun. 30, 2015 USD ($) $ / shares shares	Mar. 20, 2015 USD ($) $ / shares shares	Mar. 12, 2015	Oct. 31, 2015 shares	Nov. 30, 2013 shares	Dec. 29, 2015 USD ($) shares	Jun. 30, 2015 USD ($) $ / shares shares	Jan. 03, 2017 USD ($) vote $ / shares shares	Dec. 30, 2014 USD ($)	Aug. 23, 2016 USD ($)	Jun. 14, 2016 USD ($) shares	Feb. 26, 2016 USD ($)
Class of Stock [Line Items]
Number of votes entitled to each share | vote											1
Warrant exercise price per share (in dollars per share) | $ / shares			$ 11.50
Warrants exercisable, term (in days)				30 days
Issuance of common stock (in shares)	1,533,542
Number of shares, classified outside of permanent equity (in shares)														13,622,394
Redemption value of shares, classified outside of permanent equity | $				$ 136,200,000						$ 136,200,000				$ 136,200,000
Business combination, shares redeemed (in shares)				1,115						1,115
Redemption price of shares redeemed (in dollars per share) | $ / shares				$ 10						$ 10
Stock purchase agreement date						Mar. 12, 2015
Number of shares received in exchange for each warrant			0.2780
Number of shares received in exchange offer			1
Number of warrants exchanged for each share			3.6
Number of warrants eligible for exchange offer, maximum		7,750,000	6,750,000
Number of warrants tendered in the exchange offer	5,516,243
Number of warrants tendered by directors and executive officers	1,501,800
Warrants outstanding	6,646,574
Transaction costs related to exchange offer | $											$ 600,000
IPO
Class of Stock [Line Items]
Warrants issued (in shares)								12,250,000
Issuance of common stock (in shares)								15,000,000
Private Placement
Class of Stock [Line Items]
Warrants issued (in shares)				389,623
Secondary Offering
Class of Stock [Line Items]
Shareholders disclosure, sale of stock (in shares)							3,372,016
Over-Allotment Option
Class of Stock [Line Items]
Shareholders disclosure, sale of stock (in shares)							505,802
DTH
Class of Stock [Line Items]
Issuance of common stock (in shares)				4,553,540
Minority equity investment of wholly-owned subsidiaries in connection with stock purchase agreement | $					$ 120,000,000
Proceeds from issuance of common stock | $					$ 91,200,000
Purchase of new shares of common stock (in shares)					2,348,968
Stock purchase agreement date											Mar. 12, 2015
Successor
Class of Stock [Line Items]
Common stock, shares authorized (in shares)									400,000,000		400,000,000
Common stock, shares issued (in shares)									38,802,425		39,153,503
Common stock, shares outstanding (in shares)									38,802,425		39,153,503
Warrants to purchase of common stock (in shares)											6,424,373
Warrant exercise price per share (in dollars per share) | $ / shares											$ 11.50
Preferred stock, shares authorized (in shares)									1,000,000		1,000,000
Preferred stock, shares issued (in shares)									0		0
Preferred stock, shares outstanding (in shares)									0		0
Proceeds from issuance of common stock | $									$ 35,000,000		$ 0
Payment of deferred underwriter compensation | $									5,250,000		0
Shares/warrants repurchased, value | $											15,314,000
Successor | Secondary Offering
Class of Stock [Line Items]
Payment of deferred underwriter compensation | $									$ 700,000
Predecessor
Class of Stock [Line Items]
Issuance of common stock (in shares)				3,089,532
Proceeds from issuance of common stock | $				$ 91,200,000						$ 91,236,000		$ 0
Shares of common stock warrants issued (in shares)					213,025
Reduction in warrant liability due to mark-to-market adjustment | $										35,000
Payment of deferred underwriter compensation | $										$ 0		$ 0
Predecessor | GSMP
Class of Stock [Line Items]
Warrants to purchase of common stock (in shares)					597,802
Warrant exercise price per share (in dollars per share) | $ / shares					$ 25.00
Fair value of warrant liability | $					$ 8,300,000
Common shares redeemed (in shares)					384,777
Predecessor | DTH
Class of Stock [Line Items]
Issuance of common stock (in shares)				2,348,968
Proceeds from issuance of common stock | $				$ 91,200,000
Common Stock and Warrants [Member]
Class of Stock [Line Items]
Maximum authorized stock & warrant repurchase amount (up to) | $											50,000,000		$ 25,000,000		$ 25,000,000.0
Common Stock and Warrants [Member] | Successor
Class of Stock [Line Items]
Remaining authorized stock/warrant repurchase amount | $											$ 34,800,000
Common Stock | Successor
Class of Stock [Line Items]
Shares/warrants repurchased (in shares/warrants)											1,347,300
Average cost per share/warrant (in dollars per share/warrant) | $ / shares											$ 10.00
Shares/warrants repurchased, value | $											$ 13,500,000
Dilutive effect of warrants | Successor
Class of Stock [Line Items]
Shares/warrants repurchased (in shares/warrants)											699,007
Average cost per share/warrant (in dollars per share/warrant) | $ / shares											$ 2.54
Shares/warrants repurchased, value | $											$ 1,800,000