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Consolidated Statements of Equity - USD ($) $ in Thousands | Total | Common Stock [Member] | Common Stock Including Additional Paid in Capital [Member] | AOCI Attributable to Parent [Member] | Retained Earnings (Accumulated Deficit) [Member] | Total Itron Inc. Shareholders' Equity [Member] | Noncontrolling Interests [Member] | SIlver Spring Networks, Inc. [Member] Common Stock Including Additional Paid in Capital [Member]
--- | --- | --- | --- | --- | --- | --- | --- | ---
Cumulative effect of new accounting principle | Accounting Standards Update 2016-09 [Member] | $ 14,580 |  | $ 215 |  | $ 14,365 | $ 14,580 |  |
Balance (in shares) at Dec. 31, 2016 |  | 38,317,000 |  |  |  |  |  |
Balance (value) at Dec. 31, 2016 | 650,353 |  | 1,270,467 | $ (229,327) | (409,536) | 631,604 | $ 18,749 |
Net income (loss) | 60,249 |  |  |  | 57,298 | 57,298 | 2,951 |
Other comprehensive income (loss), net of tax | 58,849 |  |  | 58,849 |  | 58,849 | 0 |
Distributions to noncontrolling interests | (2,171) |  |  |  |  |  | (2,171) |
Options exercised (in shares) |  | 41,000 |  |  |  |  |  |
Options exercised (value) | 1,631 |  | 1,631 |  |  | 1,631 |  |
Restricted stock awards released (in shares) |  | 372,000 |  |  |  |  |  |
Restricted stock awards released (value) | 0 |  | 0 |  |  | 0 |  |
Issuance of stock-based compensation awards (in shares) |  | 10,000 |  |  |  |  |  |
Issuance of stock-based compensation awards (value) | 974 |  | 974 |  |  | 974 |  |
Employee stock purchase plan (in shares) |  | 31,000 |  |  |  |  |  |
Employee stock purchase plan (value) | 1,978 |  | 1,978 |  |  | 1,978 |  |
Stock-based compensation expense | 20,433 |  | 20,433 |  |  | 20,433 |  |
Registration fee |  |  | (906) |  |  | (906) | (313) |
Registration fee | (25) |  | (25) |  |  | (25) |  |
Excess tax benefits from employee stock plans | (1,219) |  |  |  |  |  |  |
Balance (in shares) at Dec. 31, 2017 |  | 38,771,000 |  |  |  |  |  |
Balance (value) at Dec. 31, 2017 | 805,632 |  | 1,294,767 | (170,478) | (337,873) | 786,416 | 19,216 |
Net income (loss) | (96,581) |  |  |  | (99,250) | (99,250) | 2,669 |
Other comprehensive income (loss), net of tax | (25,827) |  |  | (25,827) |  | (25,827) | 0 |
Distributions to noncontrolling interests | (500) |  |  |  |  |  | (500) |
Options exercised (in shares) |  | 152,000 |  |  |  |  |  |
Options exercised (value) | 5,935 |  | 5,935 |  |  | 5,935 |  |
Restricted stock awards released (in shares) |  | 517,000 |  |  |  |  |  |
Restricted stock awards released (value) | 0 |  | 0 |  |  | 0 |  |
Issuance of stock-based compensation awards (in shares) |  | 10,000 |  |  |  |  |  |
Issuance of stock-based compensation awards (value) | 729 |  | 729 |  |  | 729 |  |
Employee stock purchase plan (in shares) |  | 48,000 |  |  |  |  |  |
Employee stock purchase plan (value) | 2,974 |  | 2,974 |  |  | 2,974 |  |
Stock-based compensation expense | 30,534 |  | 30,534 |  |  | 30,534 |  |
Registration fee | $ (22) |  | (22) |  |  | (22) |  |
Stock repurchased |  |  |  |  |  |  |  | $ 553
Balance (in shares) at Dec. 31, 2018 | 39,498,000 | 39,498,000 |  |  |  |  |  |
Balance (value) at Dec. 31, 2018 | $ 734,048 |  | 1,334,364 | (196,305) | (425,396) | 712,663 | 21,385 |
Cumulative effect of new accounting principle | Accounting Standards Update 2016-09 [Member] | 11,727 |  | 0 |  | 11,727 | 11,727 |  |
Net income (loss) | 52,415 |  |  |  | 49,006 | 49,006 | 3,409 |
Other comprehensive income (loss), net of tax | (8,367) |  |  | (8,367) |  | (8,367) | 0 |
Distributions to noncontrolling interests | (517) |  |  |  |  |  | (517) |
Options exercised (in shares) |  | 489,000 |  |  |  |  |  |
Options exercised (value) | 21,289 |  | 21,289 |  |  | 21,289 |  |
Restricted stock awards released (in shares) |  | 415,000 |  |  |  |  |  |
Restricted stock awards released (value) | (3,113) |  | (3,113) |  |  | (3,113) |  |
Issuance of stock-based compensation awards (in shares) |  | 9,000 |  |  |  |  |  |
Issuance of stock-based compensation awards (value) | 630 |  | 630 |  |  | 630 |  |
Employee stock purchase plan (in shares) |  | 59,000 |  |  |  |  |  |
Employee stock purchase plan (value) | 3,100 |  | 3,100 |  |  | 3,100 |  |
Stock-based compensation expense | $ 26,330 |  | 26,330 |  |  | 26,330 |  |
Registration fee |  |  |  |  |  |  | 0 |
Balance (in shares) at Dec. 31, 2019 | 39,941,000 | 39,941,000 |  |  |  |  |  |
Balance (value) at Dec. 31, 2019 | $ 800,815 |  | 1,357,600 | $ (204,672) | $ (376,390) | 776,538 | $ 24,277 |
Stock Repurchased During Period, Shares | 529,396 |  |  |  |  |  |  |
Stock Repurchased During Period, Value | $ 25,000 |  | $ 25,000 |  |  | $ 25,000 |  |

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