Organization and Summary of Significant Accounting Policies (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Organization and Summary of Significant Accounting Policies [Abstract]
Number of sales centers in North America, Europe and South America	321
Number of distribution networks	3
Shipping and handling costs associated with outbound freight	$ 35,010,000	$ 33,964,000	$ 33,588,000
Advertising expense	5,917,000	6,248,000	5,484,000
(Gains) losses on foreign currency transactions	220,000	(111,000)	592,000
Threshold past due account balances for reserve analysis	20,000
Threshold past due days for reserve analysis	60
Sales period (in months) for establishing reserve for inventory obsolescence	12
Sales period (in months) for establishing reserve for inventory obsolescence - Tile	36
Depreciation expense	13,359,000	11,592,000	9,746,000
Measurement period for acquisition, maximum (in years)	1
Cumulative Share Repurchases	679,200,000
Cumulative Dividends	237,300,000
Cash paid during the year for [Abstract]
Interest	5,963,000	5,495,000	7,104,000
Income taxes, net of refunds	$ 47,138,000	$ 45,404,000	$ 39,771,000