The Company (Details)	Sep. 16, 2016 shares	Jul. 05, 2016 shares	Jul. 27, 2015 employee $ / shares shares	Mar. 31, 2017 subsidiary
Subsidiary, Sale of Stock [Line Items]
Number of wholly-owned subsidiaries | subsidiary				5
Number of shares issued to non-management employees (in shares)			30,682
Number of non-management employees receiving shares | employee			1,700
IPO and IPO Over-Allotment
Subsidiary, Sale of Stock [Line Items]
Number of shares sold (in shares)			38,906,286
Initial public offering share price (in usd per share) | $ / shares			$ 20.00
IPO Over-allotment option
Subsidiary, Sale of Stock [Line Items]
Number of shares sold (in shares)			5,074,732
SPO and SPOf Over-Allotment
Subsidiary, Sale of Stock [Line Items]
Number of shares sold (in shares)	14,300,000	17,250,000