Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Interest income:
Interest and fees on loans and leases	$ 168,638	$ 120,762	$ 110,536
Interest on cash and cash equivalents	264	174	168
Interest on investment securities:
Taxable	11,854	8,136	5,575
Non-taxable	293	388	497
Dividends	6	99	215
Total interest income	181,055	129,559	116,991
Interest expense:
Interest on deposits	20,552	8,748	5,833
Interest on short-term borrowings	3,392	1,390	93
Interest on FHLB advances and other borrowings	1,777	2,620	3,353
Interest on subordinated notes	4,575	1,628	1,476
Interest on junior subordinated debentures	1,288	46	0
Total interest expense	31,584	14,432	10,755
Net interest income	149,471	115,127	106,236
Provision for loan and lease losses	7,193	2,618	4,326
Net interest income after provision for loan and lease losses	142,278	112,509	101,910
Noninterest income:
Fees for wealth management services	42,326	38,735	36,690
Insurance commissions	6,808	4,589	3,722
Capital markets revenue	4,848	2,396	0
Service charges on deposits	2,989	2,608	2,791
Loan servicing and other fees	2,259	2,106	1,939
Net gain on sale of loans	3,283	2,441	3,048
Net gain (loss) on sale of investment securities available for sale	7	101	(77)
Net gain (loss) on sale of other real estate owned (OREO)	295	(104)	(76)
Dividends on FHLB and FRB stock	1,621	939	1,063
Other operating income	11,546	5,321	4,868
Total noninterest income	75,982	59,132	53,968
Noninterest expenses:
Salaries and wages	66,671	53,251	47,411
Employee benefits	12,918	10,170	9,249
Occupancy and bank premises	11,599	9,906	9,611
Furniture, fixtures, and equipment	8,407	7,385	7,520
Advertising	1,719	1,454	1,381
Amortization of intangible assets	3,656	2,734	3,498
Due diligence, merger-related and merger integration expenses	7,761	6,104	0
Professional fees	4,203	3,268	3,659
Pennsylvania bank shares tax	1,792	1,294	1,749
Information technology	4,942	3,581	3,661
Other operating expenses	16,635	15,248	13,935
Total noninterest expenses	140,303	114,395	101,674
Income before income taxes	77,957	57,246	54,204
Income tax expense	14,165	34,230	18,168
Net income	63,792	23,016	36,036
Net (loss) income attributable to noncontrolling interest	0	0	0
Net income attributable to Bryn Mawr Bank Corporation	$ 63,792	$ 23,016	$ 36,036
Basic earnings per common share (in dollars per share)	$ 3.15	$ 1.34	$ 2.14
Diluted earnings per common share (in dollars per share)	3.13	1.32	2.12
Dividends declared per share (in dollars per share)	$ 0.94	$ 0.86	$ 0.82
Weighted-average basic shares outstanding (in shares)	20,234,792	17,150,125	16,859,623
Dilutive shares (in shares)	155,375	248,798	168,499
Adjusted weighted-average diluted shares (in shares)	20,390,167	17,398,923	17,028,122