Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Investments:
Equity securities	$ 1,439,062	$ 2,505,496
Debt securities	14,950,006	14,211,745
Short-term investments	1,119,678	914,776
Marketable Securities, Total	17,508,746	17,632,017
Commercial mortgage loans	685,412	686,206
Other invested assets	415,333	573,605
Total investments	18,609,491	18,891,828
Cash	1,652,671	1,179,098
Accrued investment income	91,224	96,516
Premium balances receivable	1,089,481	948,010
Reinsurance recoverables	1,539,717	1,681,962
Ceded unearned premiums	291,853	248,153
Deferred acquisition costs	551,984	522,577
Property and equipment at cost, net of accumulated depreciation and amortization	272,360	205,397
Goodwill	613,054	523,021
Intangible assets, net of amortization	808,933	685,953
Current taxes receivable		4,081
Net deferred tax assets	48,033	5,860
Funds held under reinsurance agreements	756,284	755,515
Other assets	1,295,786	1,183,633
Total assets	27,620,871	26,931,604
Liabilities, Redeemable Noncontrolling Interests and Stockholders’ Equity
Loss and loss adjustment expenses	12,051,334	11,928,359
Unearned premiums	2,773,061	2,566,170
Senior notes and other debt	2,017,903	1,751,113
Reinsurance payable	200,375	188,399
Current taxes payable	12,580
Other liabilities	1,881,473	1,516,076
Total liabilities	18,936,726	17,950,117
Redeemable noncontrolling interests	227,906	204,753
Common stock	17,460	17,460
Contributed capital	3,609,521	3,608,638
Accumulated other comprehensive income	291,993	171,350
Treasury stock	(1,495,475)	(1,455,877)
Retained earnings	6,032,740	6,435,163
Total stockholders’ equity attributable to Alleghany stockholders	8,456,239	8,776,734
Total liabilities, redeemable noncontrolling interests and stockholders’ equity	$ 27,620,871	$ 26,931,604