Subsequent Events	3 Months Ended
Mar. 31, 2013
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events The Company evaluates subsequent events at the date of the balance sheet as well as conditions that arise after the balance sheet date but before the financial statements are issued. The effects of conditions that existed at the date of the balance sheet date are recognized in the financial statements. Events and conditions arising after the balance sheet date but before the financial statements are issued are evaluated to determine if disclosure is required to keep the financial statements from being misleading. To the extent such events and conditions exist, if any, disclosures are made regarding the nature of events and the estimated financial effects for those events and conditions. For purposes of preparing the accompanying consolidated financial statements and the notes to these financial statements, the Company evaluated subsequent events through the date the accompanying financial statements were issued. On April 1, 2013, the Company acquired 100% of the outstanding common stock of Aquacue, Inc. (“Aquacue”) of Los Gatos, California for approximately $14.0 million, of which $1.5 million is deferred until December 2013 and $1.5 million is deferred until September 2014. The Aquacue acquisition primarily provides the Company with intellectual property that compliments and expands the Company's Advanced Metering Analytics offerings by adding an integrated software platform that allows utility managers to monitor and control their water systems, while providing water management data to consumers. Sales for Aquacue are immaterial. Since the acquisition closed subsequent to March 31, 2013, the accompanying consolidated condensed financial statements do not reflect any adjustments related to the acquisition, although transaction costs of approximately $0.1 million are included in selling, engineering and administration in the Company's Unaudited Consolidated Condensed Statements of Operations at March 31, 2013. The allocation of the purchase price to the fair value of assets acquired and liabilities assumed is incomplete because the acquisition was only recently consummated and the Company has just begun the valuation process. Therefore, no additional disclosures are available.

Subsequent Events

The Company evaluates subsequent events at the date of the balance sheet as well as conditions that arise after the balance sheet date but before the financial statements are issued. The effects of conditions that existed at the date of the balance sheet date are recognized in the financial statements. Events and conditions arising after the balance sheet date but before the financial statements are issued are evaluated to determine if disclosure is required to keep the financial statements from being misleading. To the extent such events and conditions exist, if any, disclosures are made regarding the nature of events and the estimated financial effects for those events and conditions. For purposes of preparing the accompanying consolidated financial statements and the notes to these financial statements, the Company evaluated subsequent events through the date the accompanying financial statements were issued.

On April 1, 2013, the Company acquired 100% of the outstanding common stock of Aquacue, Inc. (“Aquacue”) of Los Gatos, California for approximately $14.0 million, of which $1.5 million is deferred until December 2013 and $1.5 million is deferred until September 2014. The Aquacue acquisition primarily provides the Company with intellectual property that compliments and expands the Company's Advanced Metering Analytics offerings by adding an integrated software platform that allows utility managers to monitor and control their water systems, while providing water management data to consumers. Sales for Aquacue are immaterial.

Since the acquisition closed subsequent to March 31, 2013, the accompanying consolidated condensed financial statements do not reflect any adjustments related to the acquisition, although transaction costs of approximately $0.1 million are included in selling, engineering and administration in the Company's Unaudited Consolidated Condensed Statements of Operations at March 31, 2013.

The allocation of the purchase price to the fair value of assets acquired and liabilities assumed is incomplete because the acquisition was only recently consummated and the Company has just begun the valuation process. Therefore, no additional disclosures are available.