QUARTERLY FINANCIAL DATA (UNAUDITED) (Tables)

12 Months Ended

Dec. 31, 2015

Quarterly Financial Data [Abstract]

Schedule of Quarterly Financial Data (Unaudited)

The Company's common stock is traded on the New York Stock Exchange under the symbol "CWT."

2015	First		Second		Third		Fourth
Operating revenue	$	121,985	$	144,414	$	183,543	$	138,426
Net operating income	7,497		16,493		32,201		14,962
Net income	1,575		9,845		25,120		8,477
Diluted earnings per share	0.03		0.21		0.52		0.18
Common stock market price range:
High	25.99		25.30		24.36		24.35
Low	23.63		22.58		19.55		21.01
Dividends paid per common share	0.1675		0.1675		0.1675		0.1675

2014	First			Second		Third		Fourth
Operating revenue	$	110,515		$	158,416	$	191,184	$	137,384
Net operating income	1,152			23,292		40,834		16,569
Net income	(5,476		)	17,170		33,650		11,394
Diluted earnings (loss) per share	(0.11		)	0.36		0.70		0.24
Common stock market price range:
High	24.60			24.37		24.78		26.37
Low	21.63			20.33		22.41		21.98
Dividends paid per common share	0.1625			0.1625		0.1625		0.1625