Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Dec. 31, 2019 | Dec. 31, 2018 |
Changes in the components of accumulated other comprehensive income (loss) | | | | | | | | |
Balance | $ 397,397 | $ 399,202 | $ 390,774 | $ 359,431 | $ 421,347 | $ 436,083 | $ 390,774 | $ 436,083 |
Reclassifications from OCI to: | | | | | | | | |
Other income | (209) | | | 444 | | | (1,137) | (998) |
Revenue | (335,107) | | | (314,681) | | | (982,632) | (920,232) |
Costs of revenue | 236,427 | | | 221,461 | | | 709,746 | 654,288 |
Selling, general and administrative expenses | 68,270 | | | 73,935 | | | 209,813 | 218,716 |
Interest expense | 4,873 | | | 4,597 | | | 14,616 | 13,365 |
Less: comprehensive income attributable to noncontrolling interest, net of tax | 484 | | | 669 | | | 849 | 134 |
Other comprehensive income (loss) | 1,892 | (8,585) | (1,194) | | | (14,526) | | |
Other income (expense), net of tax | 7,209 | | | (3,912) | | | 17,035 | 22,173 |
Comprehensive income (loss) | | | | 3,478 | (10,492) | | | |
Balance | 403,296 | 397,397 | 399,202 | 380,814 | 359,431 | 421,347 | 403,296 | 380,814 |
Investment securities, including noncontrolling interests | | | | | | | | |
Changes in the components of accumulated other comprehensive income (loss) | | | | | | | | |
OCI before reclassifications net of tax | | | | (8) | | | | (176) |
Other Comprehensive Income (Loss), Tax | | | | | | | | |
OCI before reclassifications, Tax | 0 | | | 0 | | | 0 | (52) |
Investment securities, including noncontrolling interests | Other income (expense) | | | | | | | | |
Other Comprehensive Income (Loss), Tax | | | | | | | | |
Reclassifications from OCI, Tax | 0 | | | 0 | | | 0 | 12 |
Investment securities, including noncontrolling interests | Reclassification Out Of Accumulated Other Comprehensive Income | | | | | | | | |
Reclassifications from OCI to: | | | | | | | | |
Other income | | | | 271 | | | | 125 |
Investment securities, noncontrolling interests | | | | | | | | |
Reclassifications from OCI to: | | | | | | | | |
Less : Noncontrolling interests, net of tax | | | | (8) | | | | 12 |
Other Comprehensive Income (Loss), Tax | | | | | | | | |
Noncontrolling interests, Tax | 0 | | | (5) | | | 0 | 7 |
Accumulated Net Unrealized Investment Gain Loss | | | | | | | | |
Changes in the components of accumulated other comprehensive income (loss) | | | | | | | | |
Balance | 12 | | 12 | (225) | | 69 | 12 | 69 |
Reclassifications from OCI to: | | | | | | | | |
Comprehensive income (loss) | | | | 255 | | | | (39) |
Balance | 12 | 12 | | 30 | (225) | | 12 | 30 |
Other Comprehensive Income (Loss), Tax | | | | | | | | |
Comprehensive income (loss), Tax | 0 | | | (5) | | | 0 | (33) |
Currency Translation Adjustments, including noncontrolling interests | | | | | | | | |
Changes in the components of accumulated other comprehensive income (loss) | | | | | | | | |
OCI before reclassifications net of tax | 4,630 | | | (2,477) | | | (2,106) | (20,201) |
Reclassifications from OCI to: | | | | | | | | |
Less : Noncontrolling interests, net of tax | (363) | | | (396) | | | (389) | 1,217 |
Accumulated Translation Adjustment [Member] | | | | | | | | |
Changes in the components of accumulated other comprehensive income (loss) | | | | | | | | |
Balance | (64,116) | | (57,354) | (57,318) | | (41,207) | (57,354) | (41,207) |
Reclassifications from OCI to: | | | | | | | | |
Comprehensive income (loss) | 4,267 | | | (2,873) | | | (2,495) | (18,984) |
Balance | (59,849) | (64,116) | | (60,191) | (57,318) | | (59,849) | (60,191) |
Cash Flow Hedges, including noncontrolling interests | | | | | | | | |
Changes in the components of accumulated other comprehensive income (loss) | | | | | | | | |
OCI before reclassifications net of tax | (1,993) | | | 5,014 | | | (2,240) | (2,931) |
Other Comprehensive Income (Loss), Tax | | | | | | | | |
OCI before reclassifications, Tax | (386) | | | 1,608 | | | (666) | (1,582) |
Cash Flow Hedges, including noncontrolling interests | Revenue | | | | | | | | |
Other Comprehensive Income (Loss), Tax | | | | | | | | |
Reclassifications from OCI, Tax | 0 | | | 178 | | | 7 | 586 |
Cash Flow Hedges, including noncontrolling interests | Costs of revenue | | | | | | | | |
Other Comprehensive Income (Loss), Tax | | | | | | | | |
Reclassifications from OCI, Tax | (188) | | | 214 | | | (504) | 303 |
Cash Flow Hedges, including noncontrolling interests | Selling General And Administrative Expenses | | | | | | | | |
Other Comprehensive Income (Loss), Tax | | | | | | | | |
Reclassifications from OCI, Tax | (77) | | | 102 | | | (220) | 147 |
Cash Flow Hedges, including noncontrolling interests | Interest expenses | | | | | | | | |
Other Comprehensive Income (Loss), Tax | | | | | | | | |
Reclassifications from OCI, Tax | 26 | | | (74) | | | (54) | (188) |
Cash Flow Hedges, including noncontrolling interests | Reclassification Out Of Accumulated Other Comprehensive Income | | | | | | | | |
Reclassifications from OCI to: | | | | | | | | |
Revenue | | | | 332 | | | 11 | 1,087 |
Costs of revenue | (639) | | | 632 | | | (1,847) | 884 |
Selling, general and administrative expenses | (260) | | | 303 | | | (800) | 431 |
Interest expense | 75 | | | (214) | | | (155) | (543) |
Cash Flow Hedges, noncontrolling interests | | | | | | | | |
Reclassifications from OCI to: | | | | | | | | |
Less : Noncontrolling interests, net of tax | | | | (44) | | | | 35 |
Other Comprehensive Income (Loss), Tax | | | | | | | | |
Noncontrolling interests, Tax | 0 | | | (23) | | | 0 | 17 |
Accumulated Net Gain Loss From Designated Or Qualifying Cash Flow Hedges | | | | | | | | |
Changes in the components of accumulated other comprehensive income (loss) | | | | | | | | |
Balance | (2,175) | | 39 | (5,179) | | 1,881 | 39 | 1,881 |
Reclassifications from OCI to: | | | | | | | | |
Comprehensive income (loss) | (2,817) | | | 6,023 | | | (5,031) | (1,037) |
Balance | (4,992) | (2,175) | | 844 | (5,179) | | (4,992) | 844 |
Other Comprehensive Income (Loss), Tax | | | | | | | | |
Comprehensive income (loss), Tax | 625 | | | (2,005) | | | 1,437 | 717 |
Benefit plans, including noncontrolling interests | | | | | | | | |
Changes in the components of accumulated other comprehensive income (loss) | | | | | | | | |
OCI before reclassifications net of tax | | | | 3 | | | (911) | (349) |
Reclassifications from OCI to: | | | | | | | | |
Other adjustments | 3 | | | 20 | | | 76 | 171 |
Other Comprehensive Income (Loss), Tax | | | | | | | | |
OCI before reclassifications, Tax | 0 | | | 0 | | | 0 | 348 |
Benefit plans, prior service credit (cost), including noncontrolling interests | Other income (expense) | | | | | | | | |
Other Comprehensive Income (Loss), Tax | | | | | | | | |
Reclassifications from OCI, Tax | 0 | | | 0 | | | 0 | 0 |
Benefit plans, prior service credit (cost), including noncontrolling interests | Reclassification Out Of Accumulated Other Comprehensive Income | | | | | | | | |
Reclassifications from OCI to: | | | | | | | | |
Other income (expense), net of tax | 6 | | | 14 | | | 19 | 42 |
Benefit plans, net actuarial gain (loss), including noncontrolling interest | Reclassification Out Of Accumulated Other Comprehensive Income | | | | | | | | |
Reclassifications from OCI to: | | | | | | | | |
Other income (expense), net of tax | 70 | | | 36 | | | 210 | 113 |
Benefit plans, noncontrolling interests | | | | | | | | |
Reclassifications from OCI to: | | | | | | | | |
Less : Noncontrolling interests, net of tax | (3) | | | | | | (10) | 9 |
Accumulated Defined Benefit Plans Adjustment | | | | | | | | |
Changes in the components of accumulated other comprehensive income (loss) | | | | | | | | |
Balance | (2,776) | | (2,084) | (1,511) | | (1,424) | (2,084) | (1,424) |
Reclassifications from OCI to: | | | | | | | | |
Comprehensive income (loss) | 76 | | | 73 | | | (616) | (14) |
Balance | (2,700) | (2,776) | | (1,438) | (1,511) | | (2,700) | (1,438) |
Other Comprehensive Income (Loss), Tax | | | | | | | | |
Comprehensive income (loss), Tax | 0 | | | 0 | | | 0 | 348 |
Benefit plans, prior service credit (cost) | | | | | | | | |
Other Comprehensive Income (Loss), Tax | | | | | | | | |
Noncontrolling interests, Tax | 0 | | | 0 | | | 0 | 0 |
Benefit plans, net actuarial gain (loss) | Other income (expense) | | | | | | | | |
Other Comprehensive Income (Loss), Tax | | | | | | | | |
Reclassifications from OCI, Tax | 0 | | | 0 | | | 0 | 0 |
Accumulated Other Comprehensive Income | | | | | | | | |
Changes in the components of accumulated other comprehensive income (loss) | | | | | | | | |
Balance | (69,055) | (60,581) | (59,387) | (64,233) | (53,741) | (40,681) | (59,387) | (40,681) |
Reclassifications from OCI to: | | | | | | | | |
Other comprehensive income (loss) | 1,526 | (8,474) | (1,194) | | | (13,060) | | |
Comprehensive income (loss) | | | | 3,478 | (10,492) | | | |
Balance | $ (67,529) | $ (69,055) | $ (60,581) | $ (60,755) | $ (64,233) | $ (53,741) | $ (67,529) | $ (60,755) |