Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current Assets
Cash and cash equivalents	$ 150,618	$ 176,528
Trade receivables, net	127,370	125,615
Installment receivables, net	1,281	1,334
Inventories, net	132,038	121,933
Other current assets	33,966	31,504
Total Current Assets	445,273	456,914
Other Assets	101,964	97,576
Intangibles	30,387	30,244
Property and Equipment, net	79,367	80,016
Goodwill	410,291	401,283
Total Assets	1,067,282	1,066,033
Current Liabilities
Accrued expenses	94,284	90,566
Accrued expenses	111,650	118,697
Current taxes payable	4,631	6,761
Short-term debt and current maturities of long-term obligations	1,775	2,040
Total Current Liabilities	212,340	218,064
Long-Term Debt	244,366	241,405
Other Long-Term Obligations	187,904	183,270
Shareholders’ Equity
Preferred Shares (Authorized 300 shares; none outstanding)	0	0
Additional paid-in-capital	293,211	290,125
Retained earnings	173,488	187,999
Accumulated other comprehensive income	48,502	36,870
Treasury shares (3,751 and 3,701 shares in 2018 and 2017, respectively)	(101,926)	(101,006)
Total Shareholders’ Equity	422,672	423,294
Total Liabilities and Shareholders’ Equity	1,067,282	1,066,033
Common Shares [Member]
Shareholders’ Equity
Common Shares	9,395	9,304
Class B Common Shares [Member]
Shareholders’ Equity
Common Shares	$ 2	$ 2