The Company and its Subsidiaries - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2015 Insurers $ / shares shares	May. 11, 2015 $ / shares shares	May. 10, 2015 $ / shares shares	Jan. 05, 2015 $ / shares shares	Dec. 31, 2014 $ / shares shares	Jan. 30, 2014 shares
Related Party Transaction [Line Items]
Common stock, shares authorized	3,500,000,000	3,500,000,000	500,000,000		3,500,000,000
Preferred stock, shares authorized	10,000,000	10,000,000	5,000,000
Common stock, par value | $ / shares	$ 0.00001	$ 0.00001	$ 0.00001		$ 0.00001
Convertible preferred stock, par value | $ / shares	$ 0.00001	$ 0.00001	$ 0.00001
Common stock, shares issued	206,168,035				202,343,245
Common stock, shares outstanding	206,168,035				202,343,245
WMMRC [Member]
Related Party Transaction [Line Items]
Number of primary mortgage insurers | Insurers	7
Convertible Series A Preferred Stock [Member]
Related Party Transaction [Line Items]
Convertible preferred stock, par value | $ / shares	$ 0.00001				$ 0.00001
Convertible preferred stock, shares issued	1,000,000				1,000,000	1,000,000
Convertible preferred stock, shares outstanding	1,000,000				1,000,000
Redeemable Convertible Preferred Stock [Member]
Related Party Transaction [Line Items]
Convertible preferred stock, par value | $ / shares				$ 0.00001
Convertible preferred stock, shares outstanding	600,000				0
Preferred stock, shares issued	600,000			600,000	0