CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
ASSETS
Cash (includes $108,174 and $20,765 pledged to creditors)	$ 155,289	$ 37,725
Short-term investments at fair value	117,824	170,080
Mortgage loans held for sale at fair value (includes $2,478,858 and $3,081,987 pledged to creditors)	2,521,647	3,099,103
Derivative assets	96,347	78,179
Servicing advances, net (includes valuation allowance of $70,582 and $59,958; $162,895 and $114,643 pledged to creditors)	313,197	318,066
Mortgage servicing rights (includes $2,820,612 and $638,010 at fair value; $2,807,333 and $2,098,067 pledged to creditors)	2,820,612	2,119,588
Real estate acquired in settlement of loans	2,250	2,447
Furniture, fixtures, equipment and building improvements, net (includes $16,281 and $23,915 pledged to creditors)	33,374	29,453
Capitalized software, net (includes $1,017 and $1,568 pledged to creditors)	39,748	25,729
Mortgage loans eligible for repurchase	1,102,840	1,208,195
Other	109,559	107,076
Total assets	7,478,573	7,368,093
LIABILITIES
Assets sold under agreements to repurchase	1,933,859	2,381,538
Mortgage loans participation purchase and sale agreements	532,251	527,395
Notes payable	1,292,291	891,505
Obligations under capital lease	6,605	20,971
Derivative liabilities	3,064	5,796
Accounts payable and accrued expenses	156,212	109,143
Mortgage servicing liabilities at fair value	8,681	14,120
Income taxes payable	400,546	52,160
Liability for mortgage loans eligible for repurchase	1,102,840	1,208,195
Liability for losses under representations and warranties	21,155	20,053
Total liabilities	5,824,782	5,648,419
Commitments and contingencies - Note 16
STOCKHOLDERS' EQUITY
Additional paid-in capital	1,310,648	204,103
Retained earnings	343,135	265,306
Total stockholders' equity attributable to PennyMac Financial Services, Inc. common stockholders	1,653,791	469,411
Noncontrolling interest in Private National Mortgage Acceptance Company, LLC		1,250,263
Total stockholders' equity	1,653,791	1,719,674
Total liabilities and stockholders' equity	7,478,573	7,368,093
Common Stock
STOCKHOLDERS' EQUITY
Common stock	8	2
Class B Common Stock
STOCKHOLDERS' EQUITY
Common stock
PMT
ASSETS
Assets purchased from PennyMac Mortgage Investment Trust under agreements to resell pledged to creditors	131,025	144,128
Investment in PennyMac Mortgage Investment Trust at fair value	1,397	1,205
Receivable, from affiliates	33,464	27,119
LIABILITIES
Excess servicing spread financing payable to PennyMac Mortgage Investment Trust at fair value	216,110	236,534
Payable to affiliates	104,631	136,998
Private National Mortgage Acceptance Company, LLC
LIABILITIES
Payable to exchanged Private National Mortgage Acceptance Company, LLC unitholders under tax receivable agreement	$ 46,537	$ 44,011