Goodwill & Intangible Assets (Summary Of Goodwill & Intangible Assets) (Details) - USD ($) $ in Thousands		Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, Finite-Lived Intangible Assets		$ 177,882	$ 175,130
Accumulated Amortization, Finite-Lived Intangible Assets		(95,882)	(78,126)
Net Carrying Amount, Finite-Lived Intangible Assets		82,000	97,004
Indefinite lived intangible assets	[1]	297	333
Goodwill	[1]	1,973	2,044
Gross Carrying Amount, Total Intangible Assets		180,152	177,507
Net Carrying Amount, Total Intangible Assets		84,270	99,381
Capitalized Software [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, Finite-Lived Intangible Assets	[2]	162,700	157,615
Accumulated Amortization, Finite-Lived Intangible Assets	[3]	(82,596)	(62,591)
Net Carrying Amount, Finite-Lived Intangible Assets		80,104	95,024
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, Finite-Lived Intangible Assets		4,016	5,945
Accumulated Amortization, Finite-Lived Intangible Assets		(4,016)	(5,798)
Net Carrying Amount, Finite-Lived Intangible Assets			147
Patents, Copyrights And Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, Finite-Lived Intangible Assets		6,892	6,702
Accumulated Amortization, Finite-Lived Intangible Assets		(5,135)	(4,931)
Net Carrying Amount, Finite-Lived Intangible Assets		1,757	1,771
Core Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, Finite-Lived Intangible Assets	[1]	3,498	4,170
Accumulated Amortization, Finite-Lived Intangible Assets	[1]	(3,498)	(4,170)
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, Finite-Lived Intangible Assets		776	698
Accumulated Amortization, Finite-Lived Intangible Assets		(637)	(636)
Net Carrying Amount, Finite-Lived Intangible Assets		$ 139	$ 62

[1] Changes in core technology, goodwill, and indefinite lived intangible assets relate entirely to the impact of foreign currency translation.

[2] Includes $4.1 million of software held under a capital lease classified as capitalized software as of each of December 31, 2015 and 2014. During 2013, Crocs began an implementation of a new enterprise resource planning, ("ERP") system, which was placed into service in 2015. As of December 31, 2015 and 2014, Crocs capitalized $4.1 million and $36.1 million, respectively, for costs associated with the development of and added functionality to the ERP system.

[3] Includes $3.1 million and $2.5 million of accumulated amortization of software held under a capital lease as of December 31, 2015 and 2014, respectively, which is amortized using the straight-line method over the useful life.