Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Net investment income
Interest income	$ 54,366	$ 40,685
Interest expense
Interest expense	32,004	25,746
Net interest income	22,362	14,939
Net gain on mortgage loans acquired for sale	15,049	10,160
Mortgage loan origination fees	6,901	5,287
Net (loss) gain on investments	(3,898)	3,447
Net mortgage loan servicing fees	15,554	8,001
Results of real estate acquired in settlement of loans	(6,036)	(5,832)
Other	2,284	1,655
Net investment income	52,216	37,657
Expenses
Mortgage loan fulfillment fees	12,935	12,866
Mortgage loan servicing fees	11,453	10,670
Management fees	5,352	7,003
Professional services	2,293	1,828
Mortgage loan collection and liquidation	2,214	1,445
Compensation	1,289	2,808
Other	5,636	4,857
Total expenses	41,172	41,477
Income (loss) before benefit from income taxes	11,044	(3,820)
Benefit from income taxes	(3,452)	(11,328)
Net income	$ 14,496	$ 7,508
Earnings per share
Basic	$ 0.20	$ 0.09
Diluted	$ 0.20	$ 0.09
Weighted-average shares outstanding
Basic	71,884	74,528
Diluted	71,884	74,956
Dividends declared per share	$ 0.47	$ 0.61
Nonaffiliates [Member]
Net investment income
Interest income	$ 47,351	$ 36,933
Interest expense
Interest expense	30,402	25,746
Net (loss) gain on investments	13,729	9,694
PennyMac Financial Services, Inc. [Member]
Net investment income
Interest income	7,015	3,752
Interest expense
Interest expense	1,602	0
Net (loss) gain on investments	$ (17,627)	$ (6,247)