Consolidated Statements of Financial Condition - USD ($) $ in Thousands		Dec. 31, 2018	Dec. 31, 2017
Assets:
Cash and due from banks		$ 587,057	$ 621,782
Investments		91,654	82,644
Debt securities held to maturity		148,852	161,576
Debt securities available for sale		2,470,065	1,709,018
Loans and leases held for sale		90,664	134,862
Consumer real estate:
First mortgage lien		2,444,380	1,959,387
Junior lien		2,965,960	2,860,309
Total consumer real estate		5,410,340	4,819,696
Commercial		3,851,303	3,561,193
Leasing and equipment finance		4,699,740	4,761,661
Inventory finance		3,107,356	2,739,754
Auto finance		1,982,277	3,199,639
Other		21,295	22,517
Total loans and leases	[1]	19,072,311	19,104,460
Allowance for loan and lease losses		(157,446)	(171,041)
Net loans and leases		18,914,865	18,933,419
Premises and equipment, net		427,534	421,549
Goodwill, net		154,757	154,757
Other assets		814,164	782,552
Total assets		23,699,612	23,002,159
Deposits:
Checking		6,381,327	6,300,127
Savings		6,122,257	5,287,606
Money market		1,609,422	1,764,998
Certificates of deposit		4,790,680	4,982,271
Total deposits		18,903,686	18,335,002
Long-term borrowings		1,449,472	1,249,449
Accrued expenses and other liabilities		790,194	737,124
Total liabilities		21,143,352	20,321,575
Equity:
Preferred stock, par value $0.01 per share, 30,000,000 shares authorized; 7,000 and 4,007,000 shares issued		169,302	265,821
Common stock, par value $0.01 per share, 280,000,000 shares authorized; 173,584,846 and 172,158,449 shares issued		1,736	1,722
Additional paid-in capital		885,089	877,217
Retained earnings, subject to certain restrictions		1,766,994	1,577,311
Accumulated other comprehensive income (loss)		(33,138)	(18,517)
Treasury stock at cost, 9,661,619 and 489,030 shares and other		(252,182)	(40,797)
Total TCF Financial Corporation stockholders' equity		2,537,801	2,662,757
Non-controlling interest in subsidiaries		18,459	17,827
Total equity		2,556,260	2,680,584
Total liabilities and equity		$ 23,699,612	$ 23,002,159

[1] (1)Loans and leases are reported at historical cost including net direct fees and costs associated with originating and acquiring loans and leases, lease residuals, unearned income and unamortized purchase premiums and discounts. The aggregate amount of these loan and lease adjustments was $(2.2) million and $33.3 million at December 31, 2018 and 2017, respectively.