Dividend Availability and Regulatory Matters Dividend Availability and Regulatory Matters (Tables)

12 Months Ended

Dec. 31, 2017

Dividend Availability and Regulatory Matters [Abstract]

Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations

The following table presents actual capital amounts and ratios for the Company and the Bank as of the dates indicated:

				Well Capitalized
				Minimum			Excess
	Actual			Requirement			Capital
	Amount		Ratio	Amount		Ratio	Amount
	(Dollars in thousands)
December 31, 2017
Tier I leverage
PacWest Bancorp Consolidated	$	2,361,800	10.66%	$	1,107,900	5.00%	$	1,253,900
Pacific Western Bank	$	2,574,561	11.75%	$	1,095,656	5.00%	$	1,478,905
Common equity Tier I capital
PacWest Bancorp Consolidated	$	2,361,800	10.91%	$	1,407,743	6.50%	$	954,057
Pacific Western Bank	$	2,574,561	11.91%	$	1,405,299	6.50%	$	1,169,262
Tier I capital
PacWest Bancorp Consolidated	$	2,361,800	10.91%	$	1,732,607	8.00%	$	629,193
Pacific Western Bank	$	2,574,561	11.91%	$	1,729,599	8.00%	$	844,962
Total capital
PacWest Bancorp Consolidated	$	2,978,643	13.75%	$	2,165,759	10.00%	$	812,884
Pacific Western Bank	$	2,742,624	12.69%	$	2,161,999	10.00%	$	580,625
December 31, 2016
Tier I leverage
PacWest Bancorp Consolidated	$	2,286,203	11.91%	$	959,477	5.00%	$	1,326,726
Pacific Western Bank	$	2,184,097	11.40%	$	957,630	5.00%	$	1,226,467
Common equity Tier I capital
PacWest Bancorp Consolidated	$	2,286,203	12.31%	$	1,206,960	6.50%	$	1,079,243
Pacific Western Bank	$	2,184,097	11.78%	$	1,205,541	6.50%	$	978,556
Tier I capital
PacWest Bancorp Consolidated	$	2,286,203	12.31%	$	1,485,490	8.00%	$	800,713
Pacific Western Bank	$	2,184,097	11.78%	$	1,483,742	8.00%	$	700,355
Total capital
PacWest Bancorp Consolidated	$	2,889,163	15.56%	$	1,856,862	10.00%	$	1,032,301
Pacific Western Bank	$	2,358,829	12.72%	$	1,854,678	10.00%	$	504,151