Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Revenues:
Net premiums earned—insurance	$ 220,950	$ 224,595
Services revenue	31,600	30,630
Net investment income	27,201	17,328
Net gains on investments and other financial instruments	31,286	16,779
Other income	1,915	1,331
Total revenues	312,952	290,663
Expenses:
Provision for losses	42,991	45,028
Policy acquisition costs	6,389	7,750
Direct cost of services	21,749	19,253
Other operating expenses	58,989	53,774
Interest expense	21,534	24,385
Loss on induced conversion and debt extinguishment (Note 10)	55,570	0
Amortization and impairment of intangible assets	3,328	3,023
Total expenses	210,550	153,213
Pretax income from continuing operations	102,402	137,450
Income tax provision	36,153	45,723
Net income from continuing operations	66,249	91,727
Income from discontinued operations, net of tax	0	530
Net income	$ 66,249	$ 92,257
Earnings Per Share, Basic [Abstract]
Net income from continuing operations, per basic share	$ 0.33	$ 0.48
Income from discontinued operations and disposal of discontinued operations, net of tax, per basic share	0.00	0.00
Basic net income per share	0.33	0.48
Earnings Per Share, Diluted [Abstract]
Net income from continuing operations, per diluted share	0.29	0.39
Income from discontinued operations and disposal of discontinued operations, net of tax, per diluted share	0.00	0.00
Diluted net income per share	$ 0.29	$ 0.39
Weighted-average number of common shares outstanding—basic	203,706	191,224
Weighted-average number of common and common equivalent shares outstanding—diluted	239,707	243,048
Dividends per share	$ 0.0025	$ 0.0025