Condensed Consolidated Statements of Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands		Cumulative Effect, Period of Adoption, Adjustment [Member] Common Stock [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Additional Paid-in Capital [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Retained Earnings [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] AOCI Attributable to Parent [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Parent [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Noncontrolling Interest [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Common Stock [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Additional Paid-in Capital [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Retained Earnings [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] AOCI Attributable to Parent [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Parent [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Noncontrolling Interest [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member]	Cross Currency Interest Rate Contract [Member] Common Stock [Member]	Cross Currency Interest Rate Contract [Member] Additional Paid-in Capital [Member]	Cross Currency Interest Rate Contract [Member] Retained Earnings [Member]	Cross Currency Interest Rate Contract [Member] AOCI Attributable to Parent [Member]	Cross Currency Interest Rate Contract [Member] Parent [Member]	Cross Currency Interest Rate Contract [Member] Noncontrolling Interest [Member]	Cross Currency Interest Rate Contract [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Parent [Member]	Noncontrolling Interest [Member]	Total
Balance (in shares) at Dec. 31, 2019									51,032														51,032
Balance in Other comprehensive income (loss) beginning of period at Dec. 31, 2019		$ 0	$ 0	$ (755)	$ 0	$ (755)	$ 0	$ (755)	$ 51	$ 913,150	$ 487,118	$ (8,654)	$ 1,391,665	$ 122,990	$ 1,514,655								$ 51	$ 913,150	$ 487,873	$ (8,654)	$ 1,392,420	$ 122,990	$ 1,515,410
Stock-based compensation																							$ 0	1,989	0	0	1,989	0	1,989
Exercise of stock-based awards by employees and directors (*) (in shares)	[1]																						4
Exercise of stock-based awards by employees and directors (*)	[1]																						$ 0	0	0	0	0	0	0
Cash paid to noncontrolling interest																							0	0	0	0	0	(3,007)	(3,007)
Cash dividend declared																							0	0	(5,614)	0	(5,614)	0	(5,614)
Increase in noncontrolling interest																							0	0	0	0	0	1,447	1,447
Net income																							0	0	26,033	0	26,033	3,543	29,576
Foreign currency translation adjustments																							0	0	0	(258)	(258)	(387)	(645)
Change in respect of derivative instruments designated for cash flow hedge																$ 0	$ 0	$ 0	$ 13	$ 13	$ 0	$ 13
Change in unrealized gains or losses in respect of the Company's share in derivative instruments of unconsolidated investment																							0	0	0	(4,755)	(4,755)	0	(4,755)
Amortization of unrealized gains in respect of derivative instruments designated for cash flow hedge																							0	0	0	(8)	(8)	0	(8)
Change in unrealized gains or losses in respect of the Company's share in derivatives instruments of unconsolidated investment																							$ 0	0	0	(4,755)	(4,755)	0	(4,755)
Balance (in shares) at Mar. 31, 2020																							51,036
Balance in Other comprehensive income (loss) end of period at Mar. 31, 2020																							$ 51	915,139	507,537	(13,662)	1,409,065	124,586	1,533,651
Balance (in shares) at Dec. 31, 2019									51,032														51,032
Balance in Other comprehensive income (loss) beginning of period at Dec. 31, 2019		$ 0	$ 0	$ (755)	$ 0	$ (755)	$ 0	$ (755)	$ 51	$ 913,150	$ 487,118	$ (8,654)	$ 1,391,665	$ 122,990	$ 1,514,655								$ 51	913,150	487,873	(8,654)	1,392,420	122,990	1,515,410
Foreign currency translation adjustments																													276
Change in unrealized gains or losses in respect of the Company's share in derivative instruments of unconsolidated investment																													(5,408)
Change in unrealized gains or losses in respect of the Company's share in derivatives instruments of unconsolidated investment																													(5,408)
Change in unrealized gains or losses on marketable securities available-for-sale (net of related tax of $0)																													0
Other comprehensive income (loss)																													17
Balance (in shares) at Jun. 30, 2020																							51,067
Balance in Other comprehensive income (loss) end of period at Jun. 30, 2020																							$ 51	917,403	524,864	(13,921)	1,428,397	128,414	1,556,811
Balance (in shares) at Mar. 31, 2020																							51,036
Balance in Other comprehensive income (loss) beginning of period at Mar. 31, 2020																							$ 51	915,139	507,537	(13,662)	1,409,065	124,586	1,533,651
Stock-based compensation																							$ 0	2,264	0	0	2,264	0	2,264
Exercise of stock-based awards by employees and directors (*) (in shares)																							31
Exercise of stock-based awards by employees and directors (*)	[1]																						$ 0	0	0	0	0	0	0
Cash dividend declared																							0	0	(5,719)	0	(5,719)	0	(5,719)
Increase in noncontrolling interest																							0	0	0	0	0	1,307	1,307
Net income																							0	0	23,046	0	23,046	1,982	25,028
Foreign currency translation adjustments																							0	0	0	382	382	539	921
Change in respect of derivative instruments designated for cash flow hedge																0	0	0	17	17	0	17
Change in unrealized gains or losses in respect of the Company's share in derivative instruments of unconsolidated investment																							0	0	0	(653)	(653)	0	(653)
Amortization of unrealized gains in respect of derivative instruments designated for cash flow hedge																							0	0	0	(5)	(5)	0	(5)
Change in unrealized gains or losses in respect of the Company's share in derivatives instruments of unconsolidated investment																							$ 0	0	0	(653)	(653)	0	(653)
Change in unrealized gains or losses on marketable securities available-for-sale (net of related tax of $0)																													0
Other comprehensive income (loss)																													12
Balance (in shares) at Jun. 30, 2020																							51,067
Balance in Other comprehensive income (loss) end of period at Jun. 30, 2020																							$ 51	917,403	524,864	(13,921)	1,428,397	128,414	1,556,811
Balance (in shares) at Dec. 31, 2020																							55,983
Balance in Other comprehensive income (loss) beginning of period at Dec. 31, 2020																							$ 56	1,262,446	550,103	(6,620)	1,805,985	135,452	1,941,437
Stock-based compensation																							$ 0	2,097	0	0	2,097	0	2,097
Exercise of stock-based awards by employees and directors (*) (in shares)	[1]																						1
Exercise of stock-based awards by employees and directors (*)	[1]																						$ 0	0	0	0	0	0	0
Cash paid to noncontrolling interest																							0	0	0	0	0	(3,898)	(3,898)
Cash dividend declared																							0	0	(6,718)	0	(6,718)	0	(6,718)
Net income																							0	0	15,259	0	15,259	2,290	17,549
Foreign currency translation adjustments																							0	0	0	(1,253)	(1,253)	(573)	(1,826)
Change in respect of derivative instruments designated for cash flow hedge																$ 0	$ 0	$ 0	$ (2,798)	$ (2,798)	$ 0	$ (2,798)
Change in unrealized gains or losses in respect of the Company's share in derivative instruments of unconsolidated investment																							0	0	0	3,755	3,755	0	3,755
Stock issuance costs reimbursement																							0	285	0	0	285	0	285
Change in unrealized gains or losses in respect of the Company's share in derivatives instruments of unconsolidated investment																							0	0	0	3,755	3,755	0	3,755
Change in unrealized gains or losses on marketable securities available-for-sale (net of related tax of $0)																							0	0	0	(20)	(20)	0	(20)
Other comprehensive income (loss)																							$ 0	0	0	16	16	0	16
Balance (in shares) at Mar. 31, 2021																							55,984
Balance in Other comprehensive income (loss) end of period at Mar. 31, 2021																							$ 56	1,264,828	558,644	(6,920)	1,816,608	133,271	1,949,879
Balance (in shares) at Dec. 31, 2020																							55,983
Balance in Other comprehensive income (loss) beginning of period at Dec. 31, 2020																							$ 56	1,262,446	550,103	(6,620)	1,805,985	135,452	1,941,437
Foreign currency translation adjustments																													(1,410)
Change in unrealized gains or losses in respect of the Company's share in derivative instruments of unconsolidated investment																													2,521
Change in unrealized gains or losses in respect of the Company's share in derivatives instruments of unconsolidated investment																													2,521
Change in unrealized gains or losses on marketable securities available-for-sale (net of related tax of $0)																													(11)
Other comprehensive income (loss)																													33
Balance (in shares) at Jun. 30, 2021																							55,997
Balance in Other comprehensive income (loss) end of period at Jun. 30, 2021																							$ 56	1,267,451	565,222	(7,646)	1,825,083	134,772	1,959,855
Balance (in shares) at Mar. 31, 2021																							55,984
Balance in Other comprehensive income (loss) beginning of period at Mar. 31, 2021																							$ 56	1,264,828	558,644	(6,920)	1,816,608	133,271	1,949,879
Stock-based compensation																							$ 0	2,623	0	0	2,623	0	2,623
Exercise of stock-based awards by employees and directors (*) (in shares)	[1]																						13
Exercise of stock-based awards by employees and directors (*)	[1]																						$ 0	0	0	0	0	0	0
Cash paid to noncontrolling interest																							0	0	0	0	0	(426)	(426)
Cash dividend declared																							0	0	(6,448)	0	(6,448)	0	(6,448)
Net income																							0	0	13,026	0	13,026	1,795	14,821
Foreign currency translation adjustments																							0	0	0	284	284	132	416
Change in respect of derivative instruments designated for cash flow hedge																							0	0	0	198	198	0	198
Change in unrealized gains or losses in respect of the Company's share in derivative instruments of unconsolidated investment																							0	0	0	(1,234)	(1,234)	0	(1,234)
Amortization of unrealized gains in respect of derivative instruments designated for cash flow hedge																							0	0	0	17	17	0	17
Change in unrealized gains or losses in respect of the Company's share in derivatives instruments of unconsolidated investment																							0	0	0	(1,234)	(1,234)	0	(1,234)
Change in unrealized gains or losses on marketable securities available-for-sale (net of related tax of $0)																							$ 0	0	0	9	9	0	9
Other comprehensive income (loss)																													17
Balance (in shares) at Jun. 30, 2021																							55,997
Balance in Other comprehensive income (loss) end of period at Jun. 30, 2021																							$ 56	$ 1,267,451	$ 565,222	$ (7,646)	$ 1,825,083	$ 134,772	$ 1,959,855

[1] Resulted in an amount lower than $1 thousand.