Stockholders' Equity (Details) (USD $)	1 Months Ended	3 Months Ended		12 Months Ended
	Feb. 29, 2012	Mar. 31, 2012	Mar. 31, 2011	Dec. 31, 2011 Y
Stockholders' equity
Maximum stock repurchase amount approved by Board of Directors	$ 100,000,000
Number of shares repurchased		274,000
Repurchase of common stock, payments		19,999,000
Average stock price of shares repurchased (in dollars per share)		$ 72.96
Remaining stock repurchase amount approved by Board of Directors		80,000,000
Vesting period in years for non vested stock units				3
Reconciliation of retained earnings
Retained earning, at the beginning of the period		692,595,000
Deckers Outdoor Corporation		7,887,000	19,178,000
Repurchase of common stock		(19,996,000)
Retained earning, at the end of the period		680,486,000		692,595,000
Subsequent to March 31, 2012
Stockholders' equity
Number of shares repurchased		276,000
Repurchase of common stock, payments		14,700,000
Average stock price of shares repurchased (in dollars per share)		$ 53.40
Remaining stock repurchase amount approved by Board of Directors		65,300,000
2006 Equity Incentive Plan (2006 Plan)
Stockholders' equity
Common stock reserved for issuance (in shares)		6,000,000
Maximum number of shares that may be issued through the exercise of incentive stock options		4,500,000
2006 Equity Incentive Plan (2006 Plan) | Nonvested stock units issued (NSUs)
Stockholders' equity
Number of shares granted		64,000
Weighted-average grant date fair value of awards (in dollars per share)		$ 62.90
Vesting period in years for non vested stock units		3
Stock compensation expenses
Unrecognized Compensation Cost		3,982,000
2006 Equity Incentive Plan (2006 Plan) | Nonvested stock units issued (NSUs) | Subsequent to March 31, 2012
Stockholders' equity
Number of shares granted		128,000
Weighted-average grant date fair value of awards (in dollars per share)		$ 63.19
Stock compensation expenses
Unrecognized Compensation Cost		$ 8,082,000