Other Assets

12 Months Ended

Dec. 31, 2021

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Other Assets

Other AssetsOther assets consisted of the following at December 31, 2021 and 2020:

(in thousands)	December 31, 2021		December 31, 2020
Derivative assets	$	177,423	$	342,510
Low-income housing tax credit investments	135,745		108,549
Accrued interest receivable	70,537		83,804
Income taxes receivable	36,951		23,188
Prepaid expenses	34,375		30,890
Investment in unconsolidated trust subsidiaries	13,962		13,962
Insurance premium receivable	9,736		10,701
Commercial servicing asset	7,931		6,144
Other real estate owned	1,868		1,810
Other	53,914		47,471
Total other assets	$	542,442	$	669,029

The Company invests in limited partnerships that operate qualified affordable housing projects to receive tax benefits in the form of tax deductions from operating losses and tax credits. The Company accounts for the investments using the proportional amortization method; amortization of the investment in qualified affordable housing projects is recorded in the provision for income taxes together with the tax credits and benefits received. As of December 31, 2021, 2020, and 2019, the Company recognized $10.0 million, $7.0 million, and $3.6 million, respectively, of proportional amortization as a component of income tax expense and recognized $12.3 million, $8.4 million, and $4.3 million, respectively, in affordable housing tax credits and other tax benefits during the years. The Company's remaining capital commitments to these partnerships at December 31, 2021 and 2020 were approximately $84.5 million and $67.0 million, respectively, and are included in Other Liabilities.